1042404401 has 4 divisors (see below), whose sum is σ = 1054116900. Its totient is φ = 1030691904.

The previous prime is 1042404373. The next prime is 1042404439. The reversal of 1042404401 is 1044042401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221295376 + 821109025 = 14876^2 + 28655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042404401 - 2²⁶ = 975295537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042434401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5856116 + ... + 5856293.

It is an arithmetic number, because the mean of its divisors is an integer number (263529225).

Almost surely, 2^1042404401 is an apocalyptic number.

It is an amenable number.

1042404401 is a deficient number, since it is larger than the sum of its proper divisors (11712499).

1042404401 is an equidigital number, since it uses as much as digits as its factorization.

1042404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11712498.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1042404401 is about 32286.2881266955. The cubic root of 1042404401 is about 1013.9395854153.

Adding to 1042404401 its reverse (1044042401), we get a palindrome (2086446802).

The spelling of 1042404401 in words is "one billion, forty-two million, four hundred four thousand, four hundred one".