121539480 has 32 divisors (see below), whose sum is σ = 364618800. Its totient is φ = 32410496.

The previous prime is 121539419. The next prime is 121539503. The reversal of 121539480 is 84935121.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 506295 + ... + 506534.

Almost surely, 2^121539480 is an apocalyptic number.

121539480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121539480 is an abundant number, since it is smaller than the sum of its proper divisors (243079320).

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

121539480 is a wasteful number, since it uses less digits than its factorization.

121539480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012843 (or 1012839 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 121539480 is about 11024.4945462366. The cubic root of 121539480 is about 495.3427276513.

The spelling of 121539480 in words is "one hundred twenty-one million, five hundred thirty-nine thousand, four hundred eighty".