121913375 has 32 divisors (see below), whose sum is σ = 162953856. Its totient is φ = 90739200.

The previous prime is 121913369. The next prime is 121913381. The reversal of 121913375 is 573319121.

It is an interprime number because it is at equal distance from previous prime (121913369) and next prime (121913381).

It is not a de Polignac number, because 121913375 - 2¹² = 121909279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218597 + ... + 219153.

It is an arithmetic number, because the mean of its divisors is an integer number (5092308).

Almost surely, 2^121913375 is an apocalyptic number.

121913375 is a deficient number, since it is larger than the sum of its proper divisors (41040481).

121913375 is a wasteful number, since it uses less digits than its factorization.

121913375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 682 counting only the distinct ones).

The product of its digits is 5670, while the sum is 32.

The square root of 121913375 is about 11041.4389913634. The cubic root of 121913375 is about 495.8501528241.

The spelling of 121913375 in words is "one hundred twenty-one million, nine hundred thirteen thousand, three hundred seventy-five".