42226231 has 2 divisors, whose sum is σ = 42226232. Its totient is φ = 42226230.

The previous prime is 42226207. The next prime is 42226237. The reversal of 42226231 is 13262224.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42226231 - 2⁵ = 42226199 is a prime.

It is a super-2 number, since 2×42226231² = 3566109168930722, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42226237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21113115 + 21113116.

It is an arithmetic number, because the mean of its divisors is an integer number (21113116).

Almost surely, 2^42226231 is an apocalyptic number.

42226231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42226231 is an equidigital number, since it uses as much as digits as its factorization.

42226231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 22.

The square root of 42226231 is about 6498.1713581592. The cubic root of 42226231 is about 348.2256623079.

Adding to 42226231 its reverse (13262224), we get a palindrome (55488455).

The spelling of 42226231 in words is "forty-two million, two hundred twenty-six thousand, two hundred thirty-one".