121532456 has 32 divisors (see below), whose sum is σ = 242352000. Its totient is φ = 56937216.

The previous prime is 121532429. The next prime is 121532497. The reversal of 121532456 is 654235121.

It is a super-2 number, since 2×121532456² = 29540275722783872, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30635 + ... + 34373.

It is an arithmetic number, because the mean of its divisors is an integer number (7573500).

Almost surely, 2^121532456 is an apocalyptic number.

It is an amenable number.

121532456 is a deficient number, since it is larger than the sum of its proper divisors (120819544).

121532456 is a wasteful number, since it uses less digits than its factorization.

121532456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001 (or 3997 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 121532456 is about 11024.1759782761. The cubic root of 121532456 is about 495.3331851983. Note that the first 3 decimals are identical.

Adding to 121532456 its reverse (654235121), we get a palindrome (775767577).

The spelling of 121532456 in words is "one hundred twenty-one million, five hundred thirty-two thousand, four hundred fifty-six".