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142101000205 = 5179717234809
BaseRepresentation
bin1000010001010111100…
…0010011000000001101
3111120210021002202012121
42010111320103000031
54312010324001310
6145140313332541
713160252400223
oct2042570230015
9446707082177
10142101000205
11552a034574a
1223659407151
1310527c40198
146c40698b13
153a6a3d50da
hex2115e1300d

142101000205 has 16 divisors (see below), whose sum is σ = 182413229040. Its totient is φ = 105890660352.

The previous prime is 142101000203. The next prime is 142101000221. The reversal of 142101000205 is 502000101241.

It can be written as a sum of positive squares in 8 ways, for example, as 5577401124 + 136523599081 = 74682^2 + 369491^2 .

It is a cyclic number.

It is not a de Polignac number, because 142101000205 - 21 = 142101000203 is a prime.

It is a super-2 number, since 2×1421010002052 (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 (142101000203) 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, 8609160 + ... + 8625649.

It is an arithmetic number, because the mean of its divisors is an integer number (11400826815).

Almost surely, 2142101000205 is an apocalyptic number.

It is an amenable number.

142101000205 is a deficient number, since it is larger than the sum of its proper divisors (40312228835).

142101000205 is a wasteful number, since it uses less digits than its factorization.

142101000205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17234928.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 142101000205 its reverse (502000101241), we get a palindrome (644101101446).

The spelling of 142101000205 in words is "one hundred forty-two billion, one hundred one million, two hundred five", and thus it is an aban number.

Divisors: 1 5 17 85 97 485 1649 8245 17234809 86174045 292991753 1464958765 1671776473 8358882365 28420200041 142101000205