1002042442 has 4 divisors (see below), whose sum is σ = 1503063666. Its totient is φ = 501021220.

The previous prime is 1002042439. The next prime is 1002042467. The reversal of 1002042442 is 2442402001.

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., 942428601 + 59613841 = 30699^2 + 7721^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250510609 + ... + 250510612.

Almost surely, 2^1002042442 is an apocalyptic number.

1002042442 is a deficient number, since it is larger than the sum of its proper divisors (501021224).

1002042442 is an equidigital number, since it uses as much as digits as its factorization.

1002042442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501021223.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1002042442 is about 31655.0539724702. The cubic root of 1002042442 is about 1000.6803510175.

Adding to 1002042442 its reverse (2442402001), we get a palindrome (3444444443).

The spelling of 1002042442 in words is "one billion, two million, forty-two thousand, four hundred forty-two".