1304400120506 has 16 divisors (see below), whose sum is σ = 2240965077120. Its totient is φ = 557815976880.

The previous prime is 1304400120421. The next prime is 1304400120509. The reversal of 1304400120506 is 6050210044031.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1304400120509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101047166 + ... + 101060073.

It is an arithmetic number, because the mean of its divisors is an integer number (140060317320).

Almost surely, 2^{1304400120506} is an apocalyptic number.

1304400120506 is a deficient number, since it is larger than the sum of its proper divisors (936564956614).

1304400120506 is a wasteful number, since it uses less digits than its factorization.

1304400120506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202107709.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1304400120506 its reverse (6050210044031), we get a palindrome (7354610164537).

The spelling of 1304400120506 in words is "one trillion, three hundred four billion, four hundred million, one hundred twenty thousand, five hundred six".