120979440 has 80 divisors (see below), whose sum is σ = 416714400. Its totient is φ = 32260608.

The previous prime is 120979433. The next prime is 120979447. The reversal of 120979440 is 44979021.

120979440 is a `hidden beast` number, since 1 + 209 + 7 + 9 + 440 = 666.

It is an interprime number because it is at equal distance from previous prime (120979433) and next prime (120979447).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 120979395 and 120979404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120979447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25845 + ... + 30164.

It is an arithmetic number, because the mean of its divisors is an integer number (5208930).

Almost surely, 2^120979440 is an apocalyptic number.

120979440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120979440 is an abundant number, since it is smaller than the sum of its proper divisors (295734960).

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

120979440 is a wasteful number, since it uses less digits than its factorization.

120979440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56031 (or 56019 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 120979440 is about 10999.0654148432. The cubic root of 120979440 is about 494.5807285348.

The spelling of 120979440 in words is "one hundred twenty million, nine hundred seventy-nine thousand, four hundred forty".