1042001903 has 4 divisors (see below), whose sum is σ = 1049956248. Its totient is φ = 1034047560.

The previous prime is 1042001899. The next prime is 1042001941. The reversal of 1042001903 is 3091002401.

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

It is a cyclic number.

It is not a de Polignac number, because 1042001903 - 2² = 1042001899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042001953) 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, 3976976 + ... + 3977237.

It is an arithmetic number, because the mean of its divisors is an integer number (262489062).

Almost surely, 2^1042001903 is an apocalyptic number.

1042001903 is a deficient number, since it is larger than the sum of its proper divisors (7954345).

1042001903 is an equidigital number, since it uses as much as digits as its factorization.

1042001903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7954344.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1042001903 is about 32280.0542595579. The cubic root of 1042001903 is about 1013.8090662704.

The spelling of 1042001903 in words is "one billion, forty-two million, one thousand, nine hundred three".