121040664 has 32 divisors (see below), whose sum is σ = 313038000. Its totient is φ = 38955392.

The previous prime is 121040617. The next prime is 121040669. The reversal of 121040664 is 466040121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040669) 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, 86259 + ... + 87650.

Almost surely, 2^121040664 is an apocalyptic number.

It is an amenable number.

121040664 is an abundant number, since it is smaller than the sum of its proper divisors (191997336).

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

121040664 is a wasteful number, since it uses less digits than its factorization.

121040664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173947 (or 173943 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 121040664 is about 11001.8482083694. The cubic root of 121040664 is about 494.6641451990.

Adding to 121040664 its reverse (466040121), we get a palindrome (587080785).

The spelling of 121040664 in words is "one hundred twenty-one million, forty thousand, six hundred sixty-four".