121490715 has 32 divisors (see below), whose sum is σ = 209848320. Its totient is φ = 59835776.

The previous prime is 121490671. The next prime is 121490717. The reversal of 121490715 is 517094121.

It is a cyclic number.

It is not a de Polignac number, because 121490715 - 2⁸ = 121490459 is a prime.

It is a super-2 number, since 2×121490715² = 29519987662422450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121490717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3934 + ... + 16076.

It is an arithmetic number, because the mean of its divisors is an integer number (6557760).

Almost surely, 2^121490715 is an apocalyptic number.

121490715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121490715 is a deficient number, since it is larger than the sum of its proper divisors (88357605).

121490715 is a wasteful number, since it uses less digits than its factorization.

121490715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12203.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 121490715 is about 11022.2826583245. The cubic root of 121490715 is about 495.2764703895.

The spelling of 121490715 in words is "one hundred twenty-one million, four hundred ninety thousand, seven hundred fifteen".