121438016 has 28 divisors (see below), whose sum is σ = 275405088. Its totient is φ = 52044672.

The previous prime is 121437997. The next prime is 121438039. The reversal of 121438016 is 610834121.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135086 + ... + 135981.

It is an arithmetic number, because the mean of its divisors is an integer number (9835896).

Almost surely, 2^121438016 is an apocalyptic number.

121438016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121438016 is an abundant number, since it is smaller than the sum of its proper divisors (153967072).

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

121438016 is an equidigital number, since it uses as much as digits as its factorization.

121438016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271086 (or 271076 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 121438016 is about 11019.8918325000. The cubic root of 121438016 is about 495.2048480451.

The spelling of 121438016 in words is "one hundred twenty-one million, four hundred thirty-eight thousand, sixteen".