1042639203 has 4 divisors (see below), whose sum is σ = 1390185608. Its totient is φ = 695092800.

The previous prime is 1042639201. The next prime is 1042639237. The reversal of 1042639203 is 3029362401.

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

It is not a de Polignac number, because 1042639203 - 2¹ = 1042639201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042639201) 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, 173773198 + ... + 173773203.

It is an arithmetic number, because the mean of its divisors is an integer number (347546402).

Almost surely, 2^1042639203 is an apocalyptic number.

1042639203 is a deficient number, since it is larger than the sum of its proper divisors (347546405).

1042639203 is an equidigital number, since it uses as much as digits as its factorization.

1042639203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347546404.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1042639203 is about 32289.9241714811. The cubic root of 1042639203 is about 1014.0157097963.

The spelling of 1042639203 in words is "one billion, forty-two million, six hundred thirty-nine thousand, two hundred three".