121554125 has 64 divisors (see below), whose sum is σ = 192830976. Its totient is φ = 74304000.

The previous prime is 121554107. The next prime is 121554127. The reversal of 121554125 is 521455121.

It is not a de Polignac number, because 121554125 - 2¹⁶ = 121488589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121554094 and 121554103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121554127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 702539 + ... + 702711.

It is an arithmetic number, because the mean of its divisors is an integer number (3012984).

Almost surely, 2^121554125 is an apocalyptic number.

It is an amenable number.

121554125 is a deficient number, since it is larger than the sum of its proper divisors (71276851).

121554125 is a wasteful number, since it uses less digits than its factorization.

121554125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 269 counting only the distinct ones).

The product of its digits is 2000, while the sum is 26.

The square root of 121554125 is about 11025.1587290161. The cubic root of 121554125 is about 495.3626224293.

The spelling of 121554125 in words is "one hundred twenty-one million, five hundred fifty-four thousand, one hundred twenty-five".