120400000 has 192 divisors, whose sum is σ = 350602560. Its totient is φ = 40320000.

The previous prime is 120399997. The next prime is 120400019. The reversal of 120400000 is 4021.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2799979 + ... + 2800021.

It is an arithmetic number, because the mean of its divisors is an integer number (1826055).

Almost surely, 2^120400000 is an apocalyptic number.

120400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175301280).

120400000 is an abundant number, since it is smaller than the sum of its proper divisors (230202560).

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

120400000 is an frugal number, since it uses more digits than its factorization.

120400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 120400000 is about 10972.6933794762. The cubic root of 120400000 is about 493.7898541776.

Adding to 120400000 its reverse (4021), we get a palindrome (120404021).

The spelling of 120400000 in words is "one hundred twenty million, four hundred thousand".