121506875 has 20 divisors (see below), whose sum is σ = 173531952. Its totient is φ = 83316000.

The previous prime is 121506857. The next prime is 121506893. The reversal of 121506875 is 578605121.

It is an interprime number because it is at equal distance from previous prime (121506857) and next prime (121506893).

It is a de Polignac number, because none of the positive numbers 2^k-121506875 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9512 + ... + 18261.

Almost surely, 2^121506875 is an apocalyptic number.

121506875 is a deficient number, since it is larger than the sum of its proper divisors (52025077).

121506875 is an frugal number, since it uses more digits than its factorization.

121506875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27800 (or 27785 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 35.

The square root of 121506875 is about 11023.0156944459. The cubic root of 121506875 is about 495.2984290304.

The spelling of 121506875 in words is "one hundred twenty-one million, five hundred six thousand, eight hundred seventy-five".