121515714 has 20 divisors (see below), whose sum is σ = 272285574. Its totient is φ = 40505184.

The previous prime is 121515701. The next prime is 121515763. The reversal of 121515714 is 417515121.

It can be written as a sum of positive squares in only one way, i.e., 93605625 + 27910089 = 9675^2 + 5283^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 374887 + ... + 375210.

Almost surely, 2^121515714 is an apocalyptic number.

121515714 is an abundant number, since it is smaller than the sum of its proper divisors (150769860).

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

121515714 is an equidigital number, since it uses as much as digits as its factorization.

121515714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750111 (or 750102 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 121515714 is about 11023.4166209937. The cubic root of 121515714 is about 495.3104388766.

The spelling of 121515714 in words is "one hundred twenty-one million, five hundred fifteen thousand, seven hundred fourteen".