1042403603 has 4 divisors (see below), whose sum is σ = 1103721480. Its totient is φ = 981085728.

The previous prime is 1042403599. The next prime is 1042403623. The reversal of 1042403603 is 3063042401.

It is a happy number.

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 1042403603 - 2² = 1042403599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042403623) 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, 30658913 + ... + 30658946.

It is an arithmetic number, because the mean of its divisors is an integer number (275930370).

Almost surely, 2^1042403603 is an apocalyptic number.

1042403603 is a deficient number, since it is larger than the sum of its proper divisors (61317877).

1042403603 is an equidigital number, since it uses as much as digits as its factorization.

1042403603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61317876.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1042403603 is about 32286.2757685057. The cubic root of 1042403603 is about 1013.9393266789.

The spelling of 1042403603 in words is "one billion, forty-two million, four hundred three thousand, six hundred three".