121290075 has 24 divisors (see below), whose sum is σ = 222815600. Its totient is φ = 64687680.

The previous prime is 121290067. The next prime is 121290097. The reversal of 121290075 is 570092121.

It is not a de Polignac number, because 121290075 - 2³ = 121290067 is a prime.

It is a super-2 number, since 2×121290075² = 29422564587011250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89170 + ... + 90519.

Almost surely, 2^121290075 is an apocalyptic number.

121290075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121290075 is a deficient number, since it is larger than the sum of its proper divisors (101525525).

121290075 is a wasteful number, since it uses less digits than its factorization.

121290075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179708 (or 179697 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 121290075 is about 11013.1773344480. The cubic root of 121290075 is about 495.0036730673.

The spelling of 121290075 in words is "one hundred twenty-one million, two hundred ninety thousand, seventy-five".