121044720 has 40 divisors (see below), whose sum is σ = 375239376. Its totient is φ = 32278528.

The previous prime is 121044701. The next prime is 121044733. The reversal of 121044720 is 27440121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251937 + ... + 252416.

Almost surely, 2^121044720 is an apocalyptic number.

121044720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121044720 is an abundant number, since it is smaller than the sum of its proper divisors (254194656).

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

121044720 is a wasteful number, since it uses less digits than its factorization.

121044720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504369 (or 504363 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 121044720 is about 11002.0325394901. The cubic root of 121044720 is about 494.6696704369.

Adding to 121044720 its reverse (27440121), we get a palindrome (148484841).

The spelling of 121044720 in words is "one hundred twenty-one million, forty-four thousand, seven hundred twenty".