120120045400 has 48 divisors (see below), whose sum is σ = 280309782240. Its totient is φ = 47870697600.

The previous prime is 120120045373. The next prime is 120120045401. The reversal of 120120045400 is 4540021021.

It is a super-2 number, since 2×120120045400² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120120045401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1053919 + ... + 1162318.

It is an arithmetic number, because the mean of its divisors is an integer number (5839787130).

Almost surely, 2^120120045400 is an apocalyptic number.

120120045400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120120045400 is an abundant number, since it is smaller than the sum of its proper divisors (160189736840).

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

120120045400 is a wasteful number, since it uses less digits than its factorization.

120120045400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216524 (or 2216515 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 120120045400 its reverse (4540021021), we get a palindrome (124660066421).

The spelling of 120120045400 in words is "one hundred twenty billion, one hundred twenty million, forty-five thousand, four hundred".