120553440 has 96 divisors (see below), whose sum is σ = 434004480. Its totient is φ = 27554304.

The previous prime is 120553427. The next prime is 120553469. The reversal of 120553440 is 44355021.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 120553440.

It is a congruent number.

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, 14580 + ... + 21299.

It is an arithmetic number, because the mean of its divisors is an integer number (4520880).

Almost surely, 2^120553440 is an apocalyptic number.

120553440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120553440 is an abundant number, since it is smaller than the sum of its proper divisors (313451040).

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

120553440 is a wasteful number, since it uses less digits than its factorization.

120553440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35904 (or 35896 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 120553440 is about 10979.6830555349. The cubic root of 120553440 is about 493.9995301235. Note that the first 3 decimals are identical.

It can be divided in two parts, 1205 and 53440, that added together give a palindrome (54645).

The spelling of 120553440 in words is "one hundred twenty million, five hundred fifty-three thousand, four hundred forty".