102158724 has 48 divisors (see below), whose sum is σ = 243714240. Its totient is φ = 33298560.

The previous prime is 102158699. The next prime is 102158747. The reversal of 102158724 is 427851201.

It is a junction number, because it is equal to n+sod(n) for n = 102158691 and 102158700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108094 + ... + 109034.

It is an arithmetic number, because the mean of its divisors is an integer number (5077380).

Almost surely, 2^102158724 is an apocalyptic number.

It is an amenable number.

102158724 is an abundant number, since it is smaller than the sum of its proper divisors (141555516).

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

102158724 is a wasteful number, since it uses less digits than its factorization.

102158724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 102158724 is about 10107.3598926723. The cubic root of 102158724 is about 467.4751036719.

The spelling of 102158724 in words is "one hundred two million, one hundred fifty-eight thousand, seven hundred twenty-four".