102539740 has 12 divisors (see below), whose sum is σ = 215333496. Its totient is φ = 41015888.

The previous prime is 102539711. The next prime is 102539743. The reversal of 102539740 is 47935201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102539743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563474 + ... + 2563513.

It is an arithmetic number, because the mean of its divisors is an integer number (17944458).

Almost surely, 2^102539740 is an apocalyptic number.

102539740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102539740 is an abundant number, since it is smaller than the sum of its proper divisors (112793756).

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

102539740 is a wasteful number, since it uses less digits than its factorization.

102539740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126996 (or 5126994 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 102539740 is about 10126.1907941733. The cubic root of 102539740 is about 468.0555550481.

The spelling of 102539740 in words is "one hundred two million, five hundred thirty-nine thousand, seven hundred forty".