42412231 has 2 divisors, whose sum is σ = 42412232. Its totient is φ = 42412230.

The previous prime is 42412219. The next prime is 42412241. The reversal of 42412231 is 13221424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42412231 - 2⁷ = 42412103 is a prime.

It is a super-2 number, since 2×42412231² = 3597594676794722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42412199 and 42412208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42412211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21206115 + 21206116.

It is an arithmetic number, because the mean of its divisors is an integer number (21206116).

Almost surely, 2^42412231 is an apocalyptic number.

42412231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42412231 is an equidigital number, since it uses as much as digits as its factorization.

42412231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 384, while the sum is 19.

The square root of 42412231 is about 6512.4673511658. The cubic root of 42412231 is about 348.7362067660.

Adding to 42412231 its reverse (13221424), we get a palindrome (55633655).

The spelling of 42412231 in words is "forty-two million, four hundred twelve thousand, two hundred thirty-one".