121362720 has 96 divisors (see below), whose sum is σ = 398950272. Its totient is φ = 30953472.

The previous prime is 121362713. The next prime is 121362749. The reversal of 121362720 is 27263121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5544 + ... + 16536.

It is an arithmetic number, because the mean of its divisors is an integer number (4155732).

Almost surely, 2^121362720 is an apocalyptic number.

121362720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121362720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199475136).

121362720 is an abundant number, since it is smaller than the sum of its proper divisors (277587552).

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

121362720 is a wasteful number, since it uses less digits than its factorization.

121362720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11034 (or 11026 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 121362720 is about 11016.4749352958. The cubic root of 121362720 is about 495.1024785276.

The spelling of 121362720 in words is "one hundred twenty-one million, three hundred sixty-two thousand, seven hundred twenty".