121313420 has 24 divisors (see below), whose sum is σ = 254965200. Its totient is φ = 48485952.

The previous prime is 121313419. The next prime is 121313441. The reversal of 121313420 is 24313121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46511 + ... + 49049.

It is an arithmetic number, because the mean of its divisors is an integer number (10623550).

Almost surely, 2^121313420 is an apocalyptic number.

121313420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121313420 is an abundant number, since it is smaller than the sum of its proper divisors (133651780).

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

121313420 is a wasteful number, since it uses less digits than its factorization.

121313420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937 (or 4935 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121313420 is about 11014.2371501616. The cubic root of 121313420 is about 495.0354292228.

Adding to 121313420 its reverse (24313121), we get a palindrome (145626541).

It can be divided in two parts, 12131 and 3420, that added together give a palindrome (15551).

The spelling of 121313420 in words is "one hundred twenty-one million, three hundred thirteen thousand, four hundred twenty".