102149250 has 64 divisors (see below), whose sum is σ = 291403008. Its totient is φ = 23347200.

The previous prime is 102149249. The next prime is 102149261. The reversal of 102149250 is 52941201.

It is a self number, because there is not a number n which added to its sum of digits gives 102149250.

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 31 ways as a sum of consecutive naturals, for example, 4479 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (4553172).

Almost surely, 2^102149250 is an apocalyptic number.

102149250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102149250 is an abundant number, since it is smaller than the sum of its proper divisors (189253758).

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

102149250 is a wasteful number, since it uses less digits than its factorization.

102149250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19484 (or 19474 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 102149250 is about 10106.8912134246. The cubic root of 102149250 is about 467.4606523167.

The spelling of 102149250 in words is "one hundred two million, one hundred forty-nine thousand, two hundred fifty".