121937440 has 48 divisors (see below), whose sum is σ = 303246720. Its totient is φ = 46206720.

The previous prime is 121937437. The next prime is 121937441. The reversal of 121937440 is 44739121.

It is not an unprimeable number, because it can be changed into a prime (121937441) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17016 + ... + 23095.

It is an arithmetic number, because the mean of its divisors is an integer number (6317640).

Almost surely, 2^121937440 is an apocalyptic number.

121937440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121937440 is an abundant number, since it is smaller than the sum of its proper divisors (181309280).

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

121937440 is a wasteful number, since it uses less digits than its factorization.

121937440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40145 (or 40137 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 121937440 is about 11042.5286959102. The cubic root of 121937440 is about 495.8827766684.

The spelling of 121937440 in words is "one hundred twenty-one million, nine hundred thirty-seven thousand, four hundred forty".