42442242031 has 4 divisors (see below), whose sum is σ = 48505419472. Its totient is φ = 36379064592.

The previous prime is 42442242013. The next prime is 42442242053. The reversal of 42442242031 is 13024224424.

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 42442242031 - 2²⁹ = 41905371119 is a prime.

It is a super-2 number, since 2×42442242031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442242001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3031588710 + ... + 3031588723.

It is an arithmetic number, because the mean of its divisors is an integer number (12126354868).

Almost surely, 2^42442242031 is an apocalyptic number.

42442242031 is a deficient number, since it is larger than the sum of its proper divisors (6063177441).

42442242031 is an equidigital number, since it uses as much as digits as its factorization.

42442242031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063177440.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42442242031 its reverse (13024224424), we get a palindrome (55466466455).

The spelling of 42442242031 in words is "forty-two billion, four hundred forty-two million, two hundred forty-two thousand, thirty-one".