102457938 has 16 divisors (see below), whose sum is σ = 223544736. Its totient is φ = 31047840.

The previous prime is 102457931. The next prime is 102457951. The reversal of 102457938 is 839754201.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102457896 and 102457905.

It is not an unprimeable number, because it can be changed into a prime (102457931) 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, 776131 + ... + 776262.

It is an arithmetic number, because the mean of its divisors is an integer number (13971546).

Almost surely, 2^102457938 is an apocalyptic number.

102457938 is an abundant number, since it is smaller than the sum of its proper divisors (121086798).

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

102457938 is a wasteful number, since it uses less digits than its factorization.

102457938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552409.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 102457938 is about 10122.1508583897. The cubic root of 102457938 is about 467.9310567592.

The spelling of 102457938 in words is "one hundred two million, four hundred fifty-seven thousand, nine hundred thirty-eight".