102129797 has 16 divisors (see below), whose sum is σ = 127913472. Its totient is φ = 79217520.

The previous prime is 102129787. The next prime is 102129803. The reversal of 102129797 is 797921201.

It is a cyclic number.

It is not a de Polignac number, because 102129797 - 2²⁰ = 101081221 is a prime.

It is a super-2 number, since 2×102129797² = 20860990870522418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102129797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102129707) 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, 14558 + ... + 20400.

It is an arithmetic number, because the mean of its divisors is an integer number (7994592).

Almost surely, 2^102129797 is an apocalyptic number.

It is an amenable number.

102129797 is a deficient number, since it is larger than the sum of its proper divisors (25783675).

102129797 is a wasteful number, since it uses less digits than its factorization.

102129797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 102129797 is about 10105.9288044197. The cubic root of 102129797 is about 467.4309764930.

The spelling of 102129797 in words is "one hundred two million, one hundred twenty-nine thousand, seven hundred ninety-seven".