121579746 has 24 divisors (see below), whose sum is σ = 256635504. Its totient is φ = 38392920.

The previous prime is 121579739. The next prime is 121579747. The reversal of 121579746 is 647975121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121579698 and 121579707.

It is not an unprimeable number, because it can be changed into a prime (121579747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25900 + ... + 30231.

It is an arithmetic number, because the mean of its divisors is an integer number (10693146).

Almost surely, 2^121579746 is an apocalyptic number.

121579746 is an abundant number, since it is smaller than the sum of its proper divisors (135055758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121579746 is a wasteful number, since it uses less digits than its factorization.

121579746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56174 (or 56155 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 121579746 is about 11026.3206011797. The cubic root of 121579746 is about 495.3974239197.

The spelling of 121579746 in words is "one hundred twenty-one million, five hundred seventy-nine thousand, seven hundred forty-six".