121550456 has 16 divisors (see below), whose sum is σ = 228031200. Its totient is φ = 60742144.

The previous prime is 121550437. The next prime is 121550479. The reversal of 121550456 is 654055121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19265 + ... + 24783.

It is an arithmetic number, because the mean of its divisors is an integer number (14251950).

Almost surely, 2^121550456 is an apocalyptic number.

It is an amenable number.

121550456 is a deficient number, since it is larger than the sum of its proper divisors (106480744).

121550456 is a wasteful number, since it uses less digits than its factorization.

121550456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278 (or 8274 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 121550456 is about 11024.9923355982. The cubic root of 121550456 is about 495.3576383567.

The spelling of 121550456 in words is "one hundred twenty-one million, five hundred fifty thousand, four hundred fifty-six".