42424231 has 4 divisors (see below), whose sum is σ = 44919792. Its totient is φ = 39928672.

The previous prime is 42424201. The next prime is 42424241. The reversal of 42424231 is 13242424.

It is a happy number.

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 42424231 - 2⁷ = 42424103 is a prime.

It is a super-2 number, since 2×42424231² = 3599630751882722, 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 (42424201) 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, 1247755 + ... + 1247788.

It is an arithmetic number, because the mean of its divisors is an integer number (11229948).

Almost surely, 2^42424231 is an apocalyptic number.

42424231 is a deficient number, since it is larger than the sum of its proper divisors (2495561).

42424231 is a wasteful number, since it uses less digits than its factorization.

42424231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495560.

The product of its digits is 1536, while the sum is 22.

The square root of 42424231 is about 6513.3885958079. The cubic root of 42424231 is about 348.7690938189.

Adding to 42424231 its reverse (13242424), we get a palindrome (55666655).

It can be divided in two parts, 4242423 and 1, that added together give a palindrome (4242424).

The spelling of 42424231 in words is "forty-two million, four hundred twenty-four thousand, two hundred thirty-one".