42013312043 has 4 divisors (see below), whose sum is σ = 43839977808. Its totient is φ = 40186646280.

The previous prime is 42013312027. The next prime is 42013312063. The reversal of 42013312043 is 34021331024.

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 42013312043 - 2⁴ = 42013312027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1826665741 = 42013312043 / (4 + 2 + 0 + 1 + 3 + 3 + 1 + 2 + 0 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013312063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 913332848 + ... + 913332893.

It is an arithmetic number, because the mean of its divisors is an integer number (10959994452).

Almost surely, 2^42013312043 is an apocalyptic number.

42013312043 is a deficient number, since it is larger than the sum of its proper divisors (1826665765).

42013312043 is a wasteful number, since it uses less digits than its factorization.

42013312043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826665764.

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

Adding to 42013312043 its reverse (34021331024), we get a palindrome (76034643067).

The spelling of 42013312043 in words is "forty-two billion, thirteen million, three hundred twelve thousand, forty-three".