121532460 has 144 divisors (see below), whose sum is σ = 407291136. Its totient is φ = 26522496.

The previous prime is 121532429. The next prime is 121532497. The reversal of 121532460 is 64235121.

It is a self number, because there is not a number n which added to its sum of digits gives 121532460.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 221907 + ... + 222453.

Almost surely, 2^121532460 is an apocalyptic number.

121532460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121532460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203645568).

121532460 is an abundant number, since it is smaller than the sum of its proper divisors (285758676).

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

121532460 is a wasteful number, since it uses less digits than its factorization.

121532460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 121532460 is about 11024.1761596956. The cubic root of 121532460 is about 495.3331906326. Note that the first 3 decimals are identical.

Adding to 121532460 its reverse (64235121), we get a palindrome (185767581).

The spelling of 121532460 in words is "one hundred twenty-one million, five hundred thirty-two thousand, four hundred sixty".