121070640 has 40 divisors (see below), whose sum is σ = 375319728. Its totient is φ = 32285440.

The previous prime is 121070633. The next prime is 121070659. The reversal of 121070640 is 46070121.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251991 + ... + 252470.

Almost surely, 2^121070640 is an apocalyptic number.

121070640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121070640 is an abundant number, since it is smaller than the sum of its proper divisors (254249088).

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

121070640 is a wasteful number, since it uses less digits than its factorization.

121070640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504477 (or 504471 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 121070640 is about 11003.2104405941. The cubic root of 121070640 is about 494.7049767346.

The spelling of 121070640 in words is "one hundred twenty-one million, seventy thousand, six hundred forty".