120400507 has 2 divisors, whose sum is σ = 120400508. Its totient is φ = 120400506.

The previous prime is 120400499. The next prime is 120400513. The reversal of 120400507 is 705004021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120400507 - 2³ = 120400499 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120400537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60200253 + 60200254.

It is an arithmetic number, because the mean of its divisors is an integer number (60200254).

Almost surely, 2^120400507 is an apocalyptic number.

120400507 is a deficient number, since it is larger than the sum of its proper divisors (1).

120400507 is an equidigital number, since it uses as much as digits as its factorization.

120400507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 120400507 is about 10972.7164822573. The cubic root of 120400507 is about 493.7905472870.

Adding to 120400507 its reverse (705004021), we get a palindrome (825404528).

The spelling of 120400507 in words is "one hundred twenty million, four hundred thousand, five hundred seven".