121374720 has 192 divisors, whose sum is σ = 432432000. Its totient is φ = 32292864.

The previous prime is 121374653. The next prime is 121374751. The reversal of 121374720 is 27473121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 276261 + ... + 276699.

It is an arithmetic number, because the mean of its divisors is an integer number (2252250).

Almost surely, 2^121374720 is an apocalyptic number.

121374720 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 121374720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216216000).

121374720 is an abundant number, since it is smaller than the sum of its proper divisors (311057280).

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

121374720 is an equidigital number, since it uses as much as digits as its factorization.

121374720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 121374720 is about 11017.0195606616. The cubic root of 121374720 is about 495.1187960973.

The spelling of 121374720 in words is "one hundred twenty-one million, three hundred seventy-four thousand, seven hundred twenty".