42113433431123 has 4 divisors (see below), whose sum is σ = 42646514867040. Its totient is φ = 41580351995208.

The previous prime is 42113433431119. The next prime is 42113433431129. The reversal of 42113433431123 is 32113433431124.

42113433431123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42113433431123 - 2² = 42113433431119 is a prime.

It is a super-2 number, since 2×42113433431123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42113433431129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266540717840 + ... + 266540717997.

It is an arithmetic number, because the mean of its divisors is an integer number (10661628716760).

Almost surely, 2^{42113433431123} is an apocalyptic number.

42113433431123 is a deficient number, since it is larger than the sum of its proper divisors (533081435917).

42113433431123 is an equidigital number, since it uses as much as digits as its factorization.

42113433431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533081435916.

The product of its digits is 62208, while the sum is 35.

Adding to 42113433431123 its reverse (32113433431124), we get a palindrome (74226866862247).

Subtracting from 42113433431123 its reverse (32113433431124), we obtain a palindrome (9999999999999).

The spelling of 42113433431123 in words is "forty-two trillion, one hundred thirteen billion, four hundred thirty-three million, four hundred thirty-one thousand, one hundred twenty-three".