102657138 has 8 divisors (see below), whose sum is σ = 205314288. Its totient is φ = 34219044.

The previous prime is 102657097. The next prime is 102657143. The reversal of 102657138 is 831756201.

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

102657138 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 102657099 and 102657108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8554756 + ... + 8554767.

It is an arithmetic number, because the mean of its divisors is an integer number (25664286).

Almost surely, 2^102657138 is an apocalyptic number.

102657138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102657138 is a wasteful number, since it uses less digits than its factorization.

102657138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17109528.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 102657138 is about 10131.9858862910. The cubic root of 102657138 is about 468.2341129063.

The spelling of 102657138 in words is "one hundred two million, six hundred fifty-seven thousand, one hundred thirty-eight".