42420011403 has 64 divisors (see below), whose sum is σ = 72309371904. Its totient is φ = 21482496000.

The previous prime is 42420011371. The next prime is 42420011423. The reversal of 42420011403 is 30411002424.

It is not a de Polignac number, because 42420011403 - 2⁵ = 42420011371 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 42420011403.

It is not an unprimeable number, because it can be changed into a prime (42420011423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1578963 + ... + 1605603.

It is an arithmetic number, because the mean of its divisors is an integer number (1129833936).

Almost surely, 2^42420011403 is an apocalyptic number.

42420011403 is a deficient number, since it is larger than the sum of its proper divisors (29889360501).

42420011403 is a wasteful number, since it uses less digits than its factorization.

42420011403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26836.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 42420011403 its reverse (30411002424), we get a palindrome (72831013827).

The spelling of 42420011403 in words is "forty-two billion, four hundred twenty million, eleven thousand, four hundred three".