1304042155 has 16 divisors (see below), whose sum is σ = 1758496320. Its totient is φ = 921115008.

The previous prime is 1304042153. The next prime is 1304042167. The reversal of 1304042155 is 5512404031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1304042155 - 2¹ = 1304042153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1304042153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434640 + ... + 437629.

It is an arithmetic number, because the mean of its divisors is an integer number (109906020).

Almost surely, 2^1304042155 is an apocalyptic number.

1304042155 is a deficient number, since it is larger than the sum of its proper divisors (454454165).

1304042155 is a wasteful number, since it uses less digits than its factorization.

1304042155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872310.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1304042155 is about 36111.5238531968. The cubic root of 1304042155 is about 1092.5228868303.

Adding to 1304042155 its reverse (5512404031), we get a palindrome (6816446186).

The spelling of 1304042155 in words is "one billion, three hundred four million, forty-two thousand, one hundred fifty-five".