121313424 has 40 divisors (see below), whose sum is σ = 321041952. Its totient is φ = 39450880.

The previous prime is 121313419. The next prime is 121313441. The reversal of 121313424 is 424313121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121313424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28854 + ... + 32789.

Almost surely, 2^121313424 is an apocalyptic number.

It is an amenable number.

121313424 is an abundant number, since it is smaller than the sum of its proper divisors (199728528).

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

121313424 is a wasteful number, since it uses less digits than its factorization.

121313424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61695 (or 61689 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 121313424 is about 11014.2373317448. The cubic root of 121313424 is about 495.0354346636.

Adding to 121313424 its reverse (424313121), we get a palindrome (545626545).

The spelling of 121313424 in words is "one hundred twenty-one million, three hundred thirteen thousand, four hundred twenty-four".