121241715 has 32 divisors (see below), whose sum is σ = 227114496. Its totient is φ = 54071040.

The previous prime is 121241707. The next prime is 121241749. The reversal of 121241715 is 517142121.

It is not a de Polignac number, because 121241715 - 2³ = 121241707 is a prime.

It is a super-2 number, since 2×121241715² = 29399106912282450, which contains 22 as substring.

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, 9777 + ... + 18386.

It is an arithmetic number, because the mean of its divisors is an integer number (7097328).

Almost surely, 2^121241715 is an apocalyptic number.

121241715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121241715 is a deficient number, since it is larger than the sum of its proper divisors (105872781).

121241715 is a wasteful number, since it uses less digits than its factorization.

121241715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28219.

The product of its digits is 560, while the sum is 24.

The square root of 121241715 is about 11010.9815638752. The cubic root of 121241715 is about 494.9378760930.

Adding to 121241715 its reverse (517142121), we get a palindrome (638383836).

The spelling of 121241715 in words is "one hundred twenty-one million, two hundred forty-one thousand, seven hundred fifteen".