121562380 has 24 divisors (see below), whose sum is σ = 268717680. Its totient is φ = 46065600.

The previous prime is 121562369. The next prime is 121562387. The reversal of 121562380 is 83265121.

It is not an unprimeable number, because it can be changed into a prime (121562387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159571 + ... + 160330.

It is an arithmetic number, because the mean of its divisors is an integer number (11196570).

Almost surely, 2^121562380 is an apocalyptic number.

121562380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121562380 is an abundant number, since it is smaller than the sum of its proper divisors (147155300).

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

121562380 is a wasteful number, since it uses less digits than its factorization.

121562380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319929 (or 319927 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 121562380 is about 11025.5330936876. The cubic root of 121562380 is about 495.3738358863.

The spelling of 121562380 in words is "one hundred twenty-one million, five hundred sixty-two thousand, three hundred eighty".