121125750 has 64 divisors (see below), whose sum is σ = 312811200. Its totient is φ = 31180800.

The previous prime is 121125737. The next prime is 121125793. The reversal of 121125750 is 57521121.

It is a self number, because there is not a number n which added to its sum of digits gives 121125750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18966 + ... + 24534.

It is an arithmetic number, because the mean of its divisors is an integer number (4887675).

Almost surely, 2^121125750 is an apocalyptic number.

121125750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121125750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156405600).

121125750 is an abundant number, since it is smaller than the sum of its proper divisors (191685450).

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

121125750 is a wasteful number, since it uses less digits than its factorization.

121125750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618 (or 5608 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 121125750 is about 11005.7144247886. The cubic root of 121125750 is about 494.7800267376.

Adding to 121125750 its reverse (57521121), we get a palindrome (178646871).

The spelling of 121125750 in words is "one hundred twenty-one million, one hundred twenty-five thousand, seven hundred fifty".