42244131 has 4 divisors (see below), whose sum is σ = 56325512. Its totient is φ = 28162752.

The previous prime is 42244129. The next prime is 42244141. The reversal of 42244131 is 13144224.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42244131 - 2¹ = 42244129 is a prime.

It is a super-2 number, since 2×42244131² = 3569133207890322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42244098 and 42244107.

It is not an unprimeable number, because it can be changed into a prime (42244141) 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, 7040686 + ... + 7040691.

It is an arithmetic number, because the mean of its divisors is an integer number (14081378).

Almost surely, 2^42244131 is an apocalyptic number.

42244131 is a deficient number, since it is larger than the sum of its proper divisors (14081381).

42244131 is a wasteful number, since it uses less digits than its factorization.

42244131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14081380.

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

The square root of 42244131 is about 6499.5485227822. The cubic root of 42244131 is about 348.2748604693.

Adding to 42244131 its reverse (13144224), we get a palindrome (55388355).

The spelling of 42244131 in words is "forty-two million, two hundred forty-four thousand, one hundred thirty-one".