121455375 has 32 divisors (see below), whose sum is σ = 203443968. Its totient is φ = 64346400.

The previous prime is 121455371. The next prime is 121455377. The reversal of 121455375 is 573554121.

It is not a de Polignac number, because 121455375 - 2² = 121455371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121455371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60132 + ... + 62118.

It is an arithmetic number, because the mean of its divisors is an integer number (6357624).

Almost surely, 2^121455375 is an apocalyptic number.

121455375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121455375 is a deficient number, since it is larger than the sum of its proper divisors (81988593).

121455375 is a wasteful number, since it uses less digits than its factorization.

121455375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2158 counting only the distinct ones).

The product of its digits is 21000, while the sum is 33.

The square root of 121455375 is about 11020.6794255164. The cubic root of 121455375 is about 495.2284426648.

The spelling of 121455375 in words is "one hundred twenty-one million, four hundred fifty-five thousand, three hundred seventy-five".