42413231 has 4 divisors (see below), whose sum is σ = 48472272. Its totient is φ = 36354192.

The previous prime is 42413207. The next prime is 42413243. The reversal of 42413231 is 13231424.

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

It is a de Polignac number, because none of the positive numbers 2^k-42413231 is a prime.

It is a super-2 number, since 2×42413231² = 3597764327718722, which 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 (42413201) 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, 3029510 + ... + 3029523.

It is an arithmetic number, because the mean of its divisors is an integer number (12118068).

Almost surely, 2^42413231 is an apocalyptic number.

42413231 is a deficient number, since it is larger than the sum of its proper divisors (6059041).

42413231 is an equidigital number, since it uses as much as digits as its factorization.

42413231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059040.

The product of its digits is 576, while the sum is 20.

The square root of 42413231 is about 6512.5441265300. The cubic root of 42413231 is about 348.7389475906.

Adding to 42413231 its reverse (13231424), we get a palindrome (55644655).

The spelling of 42413231 in words is "forty-two million, four hundred thirteen thousand, two hundred thirty-one".