102561129 has 24 divisors (see below), whose sum is σ = 161976672. Its totient is φ = 62017920.

The previous prime is 102561127. The next prime is 102561143. The reversal of 102561129 is 921165201.

102561129 is a `hidden beast` number, since 1 + 0 + 25 + 611 + 29 = 666.

It is not a de Polignac number, because 102561129 - 2¹ = 102561127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102561127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57834 + ... + 59580.

It is an arithmetic number, because the mean of its divisors is an integer number (6749028).

Almost surely, 2^102561129 is an apocalyptic number.

It is an amenable number.

102561129 is a deficient number, since it is larger than the sum of its proper divisors (59415543).

102561129 is a wasteful number, since it uses less digits than its factorization.

102561129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 102561129 is about 10127.2468618080. The cubic root of 102561129 is about 468.0880970468.

The spelling of 102561129 in words is "one hundred two million, five hundred sixty-one thousand, one hundred twenty-nine".