121503880 has 32 divisors (see below), whose sum is σ = 282205440. Its totient is φ = 47033280.

The previous prime is 121503859. The next prime is 121503919. The reversal of 121503880 is 88305121.

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, 47754 + ... + 50233.

It is an arithmetic number, because the mean of its divisors is an integer number (8818920).

Almost surely, 2^121503880 is an apocalyptic number.

121503880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121503880 is an abundant number, since it is smaller than the sum of its proper divisors (160701560).

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

121503880 is a wasteful number, since it uses less digits than its factorization.

121503880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98029 (or 98025 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 121503880 is about 11022.8798414933. The cubic root of 121503880 is about 495.2943594911.

The spelling of 121503880 in words is "one hundred twenty-one million, five hundred three thousand, eight hundred eighty".