102129131 has 8 divisors (see below), whose sum is σ = 114767520. Its totient is φ = 90173952.

The previous prime is 102129113. The next prime is 102129133. The reversal of 102129131 is 131921201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102129131 - 2²⁶ = 35020267 is a prime.

It is a super-2 number, since 2×102129131² = 20860718797630322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102129133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170486 + ... + 171083.

It is an arithmetic number, because the mean of its divisors is an integer number (14345940).

Almost surely, 2^102129131 is an apocalyptic number.

102129131 is a deficient number, since it is larger than the sum of its proper divisors (12638389).

102129131 is a wasteful number, since it uses less digits than its factorization.

102129131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341605.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 102129131 is about 10105.8958534115. The cubic root of 102129131 is about 467.4299604340.

The spelling of 102129131 in words is "one hundred two million, one hundred twenty-nine thousand, one hundred thirty-one".