121426560 has 128 divisors (see below), whose sum is σ = 430113600. Its totient is φ = 32375808.

The previous prime is 121426559. The next prime is 121426561. The reversal of 121426560 is 65624121.

121426560 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 2 + 656 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (121426559) and next prime (121426561).

It is a tau number, because it is divible by the number of its divisors (128).

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

It is not an unprimeable number, because it can be changed into a prime (121426561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13767 + ... + 20793.

Almost surely, 2^121426560 is an apocalyptic number.

121426560 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 121426560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215056800).

121426560 is an abundant number, since it is smaller than the sum of its proper divisors (308687040).

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

121426560 is an equidigital number, since it uses as much as digits as its factorization.

121426560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055 (or 7037 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 121426560 is about 11019.3720329246. The cubic root of 121426560 is about 495.1892756422.

The spelling of 121426560 in words is "one hundred twenty-one million, four hundred twenty-six thousand, five hundred sixty".