120440900 has 18 divisors (see below), whose sum is σ = 261356970. Its totient is φ = 48176320.

The previous prime is 120440899. The next prime is 120440909. The reversal of 120440900 is 9044021.

It can be written as a sum of positive squares in 3 ways, for example, as 20720704 + 99720196 = 4552^2 + 9986^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (120440909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 602105 + ... + 602304.

Almost surely, 2^120440900 is an apocalyptic number.

120440900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120440900 is an abundant number, since it is smaller than the sum of its proper divisors (140916070).

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

120440900 is a wasteful number, since it uses less digits than its factorization.

120440900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204423 (or 1204416 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 120440900 is about 10974.5569386650. The cubic root of 120440900 is about 493.8457614827.

Adding to 120440900 its reverse (9044021), we get a palindrome (129484921).

The spelling of 120440900 in words is "one hundred twenty million, four hundred forty thousand, nine hundred".