121517072 has 20 divisors (see below), whose sum is σ = 235625916. Its totient is φ = 60710400.

The previous prime is 121517023. The next prime is 121517083. The reversal of 121517072 is 270715121.

It can be written as a sum of positive squares in 2 ways, for example, as 62473216 + 59043856 = 7904^2 + 7684^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26708 + ... + 30924.

Almost surely, 2^121517072 is an apocalyptic number.

It is an amenable number.

121517072 is a deficient number, since it is larger than the sum of its proper divisors (114108844).

121517072 is a wasteful number, since it uses less digits than its factorization.

121517072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6026 (or 6020 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 121517072 is about 11023.4782169695. The cubic root of 121517072 is about 495.3122839852.

The spelling of 121517072 in words is "one hundred twenty-one million, five hundred seventeen thousand, seventy-two".