121870560 has 384 divisors, whose sum is σ = 487710720. Its totient is φ = 24938496.

The previous prime is 121870549. The next prime is 121870561. The reversal of 121870560 is 65078121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121870561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1468279 + ... + 1468361.

It is an arithmetic number, because the mean of its divisors is an integer number (1270080).

Almost surely, 2^121870560 is an apocalyptic number.

121870560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 11039×11040.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121870560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243855360).

121870560 is an abundant number, since it is smaller than the sum of its proper divisors (365840160).

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

121870560 is a wasteful number, since it uses less digits than its factorization.

121870560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 121870560 is about 11039.4999886770. The cubic root of 121870560 is about 495.7920998281.

The spelling of 121870560 in words is "one hundred twenty-one million, eight hundred seventy thousand, five hundred sixty".