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142994158090 = 25710918741043
BaseRepresentation
bin1000010100101100011…
…1011011001000001010
3111200002111201212111021
42011023013123020022
54320323001024330
6145405101023054
713221346201120
oct2051307331012
9450074655437
10142994158090
1155709524463
1223868554a8a
131063acac484
146cc7153910
153abda0e67a
hex214b1db20a

142994158090 has 32 divisors (see below), whose sum is σ = 296858136960. Its totient is φ = 48576780864.

The previous prime is 142994158079. The next prime is 142994158093. The reversal of 142994158090 is 90851499241.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142994158093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9362892 + ... + 9378151.

It is an arithmetic number, because the mean of its divisors is an integer number (9276816780).

Almost surely, 2142994158090 is an apocalyptic number.

142994158090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142994158090 is an abundant number, since it is smaller than the sum of its proper divisors (153863978870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142994158090 is a wasteful number, since it uses less digits than its factorization.

142994158090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18741166.

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 142994158090 in words is "one hundred forty-two billion, nine hundred ninety-four million, one hundred fifty-eight thousand, ninety".

Divisors: 1 2 5 7 10 14 35 70 109 218 545 763 1090 1526 3815 7630 18741043 37482086 93705215 131187301 187410430 262374602 655936505 1311873010 2042773687 4085547374 10213868435 14299415809 20427736870 28598831618 71497079045 142994158090