121531260 has 48 divisors (see below), whose sum is σ = 341824896. Its totient is φ = 32261952.

The previous prime is 121531259. The next prime is 121531271. The reversal of 121531260 is 62135121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9159 + ... + 18081.

It is an arithmetic number, because the mean of its divisors is an integer number (7121352).

Almost surely, 2^121531260 is an apocalyptic number.

121531260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121531260 is an abundant number, since it is smaller than the sum of its proper divisors (220293636).

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

121531260 is a wasteful number, since it uses less digits than its factorization.

121531260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9162 (or 9160 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 121531260 is about 11024.1217337255. The cubic root of 121531260 is about 495.3315603362.

Adding to 121531260 its reverse (62135121), we get a palindrome (183666381).

The spelling of 121531260 in words is "one hundred twenty-one million, five hundred thirty-one thousand, two hundred sixty".