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142145160845 = 51943127311881
BaseRepresentation
bin1000010001100010000…
…0110000011010001101
3111120220100012100012212
42010120200300122031
54312103130121340
6145144532040205
713161326634362
oct2043040603215
9446810170185
10142145160845
1155313268246
1223670163065
131053413273c
146c464b2469
153a6e209a65
hex211883068d

142145160845 has 64 divisors (see below), whose sum is σ = 185980354560. Its totient is φ = 103943347200.

The previous prime is 142145160841. The next prime is 142145160869. The reversal of 142145160845 is 548061541241.

It is not a de Polignac number, because 142145160845 - 22 = 142145160841 is a prime.

It is a super-2 number, since 2×1421451608452 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142145160841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 161344805 + ... + 161345685.

It is an arithmetic number, because the mean of its divisors is an integer number (2905943040).

Almost surely, 2142145160845 is an apocalyptic number.

It is an amenable number.

142145160845 is a deficient number, since it is larger than the sum of its proper divisors (43835193715).

142145160845 is a wasteful number, since it uses less digits than its factorization.

142145160845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 142145160845 in words is "one hundred forty-two billion, one hundred forty-five million, one hundred sixty thousand, eight hundred forty-five".

Divisors: 1 5 19 43 95 127 215 311 635 817 881 1555 2413 4085 4405 5461 5909 12065 13373 16739 27305 29545 37883 39497 66865 83695 103759 111887 189415 197485 254087 273991 518795 559435 719777 750443 1270435 1369955 1698371 2125853 3598885 3752215 4811141 5205829 8491855 10629265 11781613 24055705 26029145 32269049 34796857 58908065 91411679 161345245 173984285 223850647 457058395 661140283 1119253235 1496264851 3305701415 7481324255 28429032169 142145160845