121536250 has 40 divisors (see below), whose sum is σ = 248545440. Its totient is φ = 44190000.

The previous prime is 121536221. The next prime is 121536257. The reversal of 121536250 is 52635121.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (121536257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9331 + ... + 18169.

It is an arithmetic number, because the mean of its divisors is an integer number (6213636).

Almost surely, 2^121536250 is an apocalyptic number.

121536250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121536250 is an abundant number, since it is smaller than the sum of its proper divisors (127009190).

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

121536250 is an equidigital number, since it uses as much as digits as its factorization.

121536250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8872 (or 8857 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 121536250 is about 11024.3480532864. The cubic root of 121536250 is about 495.3383395815.

The spelling of 121536250 in words is "one hundred twenty-one million, five hundred thirty-six thousand, two hundred fifty".