1042405203 has 24 divisors (see below), whose sum is σ = 1645116928. Its totient is φ = 575110368.

The previous prime is 1042405193. The next prime is 1042405207. The reversal of 1042405203 is 3025042401.

It is not a de Polignac number, because 1042405203 - 2⁵ = 1042405171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1042405203.

It is not an unprimeable number, because it can be changed into a prime (1042405207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11851 + ... + 47172.

Almost surely, 2^1042405203 is an apocalyptic number.

1042405203 is a deficient number, since it is larger than the sum of its proper divisors (602711725).

1042405203 is an equidigital number, since it uses as much as digits as its factorization.

1042405203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59091 (or 59062 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1042405203 is about 32286.3005468264. The cubic root of 1042405203 is about 1013.9398454486.

Adding to 1042405203 its reverse (3025042401), we get a palindrome (4067447604).

The spelling of 1042405203 in words is "one billion, forty-two million, four hundred five thousand, two hundred three".