102921144 has 32 divisors (see below), whose sum is σ = 258015120. Its totient is φ = 34212096.

The previous prime is 102921139. The next prime is 102921163. The reversal of 102921144 is 441129201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3204 + ... + 14700.

Almost surely, 2^102921144 is an apocalyptic number.

It is an amenable number.

102921144 is an abundant number, since it is smaller than the sum of its proper divisors (155093976).

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

102921144 is a wasteful number, since it uses less digits than its factorization.

102921144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11879 (or 11875 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 102921144 is about 10145.0058649564. The cubic root of 102921144 is about 468.6351592093.

The spelling of 102921144 in words is "one hundred two million, nine hundred twenty-one thousand, one hundred forty-four".