42244731 has 6 divisors (see below), whose sum is σ = 61020180. Its totient is φ = 28163148.

The previous prime is 42244717. The next prime is 42244739. The reversal of 42244731 is 13744224.

42244731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42244731 - 2⁶ = 42244667 is a prime.

It is a super-2 number, since 2×42244731² = 3569234594524722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42244695 and 42244704.

It is not an unprimeable number, because it can be changed into a prime (42244739) 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 5 ways as a sum of consecutive naturals, for example, 2346921 + ... + 2346938.

It is an arithmetic number, because the mean of its divisors is an integer number (10170030).

Almost surely, 2^42244731 is an apocalyptic number.

42244731 is a deficient number, since it is larger than the sum of its proper divisors (18775449).

42244731 is a wasteful number, since it uses less digits than its factorization.

42244731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693865 (or 4693862 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 42244731 is about 6499.5946796704. The cubic root of 42244731 is about 348.2765093290.

Adding to 42244731 its reverse (13744224), we get a palindrome (55988955).

The spelling of 42244731 in words is "forty-two million, two hundred forty-four thousand, seven hundred thirty-one".