102555138 has 24 divisors (see below), whose sum is σ = 238598352. Its totient is φ = 29301384.

The previous prime is 102555127. The next prime is 102555149. The reversal of 102555138 is 831555201.

It is an interprime number because it is at equal distance from previous prime (102555127) and next prime (102555149).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174120 + ... + 174707.

It is an arithmetic number, because the mean of its divisors is an integer number (9941598).

Almost surely, 2^102555138 is an apocalyptic number.

102555138 is an abundant number, since it is smaller than the sum of its proper divisors (136043214).

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

102555138 is a wasteful number, since it uses less digits than its factorization.

102555138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348846 (or 348839 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 102555138 is about 10126.9510712751. The cubic root of 102555138 is about 468.0789825788.

The spelling of 102555138 in words is "one hundred two million, five hundred fifty-five thousand, one hundred thirty-eight".