42233431 has 4 divisors (see below), whose sum is σ = 42250032. Its totient is φ = 42216832.

The previous prime is 42233419. The next prime is 42233449. The reversal of 42233431 is 13433224.

It is a happy number.

42233431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42233431 - 2¹⁵ = 42200663 is a prime.

It is a super-2 number, since 2×42233431² = 3567325388063522, 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 (42233231) 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 3 ways as a sum of consecutive naturals, for example, 3595 + ... + 9868.

It is an arithmetic number, because the mean of its divisors is an integer number (10562508).

Almost surely, 2^42233431 is an apocalyptic number.

42233431 is a deficient number, since it is larger than the sum of its proper divisors (16601).

42233431 is a wasteful number, since it uses less digits than its factorization.

42233431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16600.

The product of its digits is 1728, while the sum is 22.

The square root of 42233431 is about 6498.7253365564. The cubic root of 42233431 is about 348.2454531837.

Adding to 42233431 its reverse (13433224), we get a palindrome (55666655).

The spelling of 42233431 in words is "forty-two million, two hundred thirty-three thousand, four hundred thirty-one".