121554937 has 24 divisors (see below), whose sum is σ = 149436672. Its totient is φ = 98431200.

The previous prime is 121554929. The next prime is 121554949. The reversal of 121554937 is 739455121.

It is not a de Polignac number, because 121554937 - 2³ = 121554929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121554896 and 121554905.

It is not an unprimeable number, because it can be changed into a prime (121554907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64387 + ... + 66247.

It is an arithmetic number, because the mean of its divisors is an integer number (6226528).

Almost surely, 2^121554937 is an apocalyptic number.

It is an amenable number.

121554937 is a deficient number, since it is larger than the sum of its proper divisors (27881735).

121554937 is a wasteful number, since it uses less digits than its factorization.

121554937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1942 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 121554937 is about 11025.1955538213. The cubic root of 121554937 is about 495.3637254593.

The spelling of 121554937 in words is "one hundred twenty-one million, five hundred fifty-four thousand, nine hundred thirty-seven".