42402042423 has 24 divisors (see below), whose sum is σ = 66753431472. Its totient is φ = 25779178368.

The previous prime is 42402042407. The next prime is 42402042433. The reversal of 42402042423 is 32424020424.

It is not a de Polignac number, because 42402042423 - 2⁴ = 42402042407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402042433) 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 23 ways as a sum of consecutive naturals, for example, 2173486 + ... + 2192907.

It is an arithmetic number, because the mean of its divisors is an integer number (2781392978).

Almost surely, 2^42402042423 is an apocalyptic number.

42402042423 is a deficient number, since it is larger than the sum of its proper divisors (24351389049).

42402042423 is a wasteful number, since it uses less digits than its factorization.

42402042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366495 (or 4366492 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 42402042423 its reverse (32424020424), we get a palindrome (74826062847).

The spelling of 42402042423 in words is "forty-two billion, four hundred two million, forty-two thousand, four hundred twenty-three".