121416920 has 32 divisors (see below), whose sum is σ = 273801600. Its totient is φ = 48457728.

The previous prime is 121416913. The next prime is 121416947. The reversal of 121416920 is 29614121.

It is a self number, because there is not a number n which added to its sum of digits gives 121416920.

It is a congruent number.

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, 15992 + ... + 22328.

It is an arithmetic number, because the mean of its divisors is an integer number (8556300).

Almost surely, 2^121416920 is an apocalyptic number.

121416920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121416920 is an abundant number, since it is smaller than the sum of its proper divisors (152384680).

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

121416920 is a wasteful number, since it uses less digits than its factorization.

121416920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6827 (or 6823 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 121416920 is about 11018.9346127473. The cubic root of 121416920 is about 495.1761710108.

The spelling of 121416920 in words is "one hundred twenty-one million, four hundred sixteen thousand, nine hundred twenty".