42043403403 has 56 divisors (see below), whose sum is σ = 65864879520. Its totient is φ = 26774478720.

The previous prime is 42043403393. The next prime is 42043403417. The reversal of 42043403403 is 30430434024.

It is not a de Polignac number, because 42043403403 - 2⁵ = 42043403371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42043403473) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 18928833 + ... + 18931053.

Almost surely, 2^42043403403 is an apocalyptic number.

42043403403 is a deficient number, since it is larger than the sum of its proper divisors (23821476117).

42043403403 is a wasteful number, since it uses less digits than its factorization.

42043403403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3376 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 42043403403 its reverse (30430434024), we get a palindrome (72473837427).

The spelling of 42043403403 in words is "forty-two billion, forty-three million, four hundred three thousand, four hundred three".