121570713 has 24 divisors (see below), whose sum is σ = 198665376. Its totient is φ = 73677600.

The previous prime is 121570703. The next prime is 121570727. The reversal of 121570713 is 317075121.

It is a happy number.

121570713 is a `hidden beast` number, since 1 + 21 + 570 + 71 + 3 = 666.

It is not a de Polignac number, because 121570713 - 2⁹ = 121570201 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121570703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20068 + ... + 25413.

It is an arithmetic number, because the mean of its divisors is an integer number (8277724).

Almost surely, 2^121570713 is an apocalyptic number.

It is an amenable number.

121570713 is a deficient number, since it is larger than the sum of its proper divisors (77094663).

121570713 is an equidigital number, since it uses as much as digits as its factorization.

121570713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45507 (or 45495 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 121570713 is about 11025.9109827714. The cubic root of 121570713 is about 495.3851547825.

The spelling of 121570713 in words is "one hundred twenty-one million, five hundred seventy thousand, seven hundred thirteen".