1042004402 has 4 divisors (see below), whose sum is σ = 1563006606. Its totient is φ = 521002200.

The previous prime is 1042004399. The next prime is 1042004407. The reversal of 1042004402 is 2044002401.

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

It can be written as a sum of positive squares in only one way, i.e., 825355441 + 216648961 = 28729^2 + 14719^2 .

It is not an unprimeable number, because it can be changed into a prime (1042004407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260501099 + ... + 260501102.

Almost surely, 2^1042004402 is an apocalyptic number.

1042004402 is a deficient number, since it is larger than the sum of its proper divisors (521002204).

1042004402 is an equidigital number, since it uses as much as digits as its factorization.

1042004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521002203.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1042004402 is about 32280.0929676480. The cubic root of 1042004402 is about 1013.8098767317.

Adding to 1042004402 its reverse (2044002401), we get a palindrome (3086006803).

The spelling of 1042004402 in words is "one billion, forty-two million, four thousand, four hundred two".