42423263 has 2 divisors, whose sum is σ = 42423264. Its totient is φ = 42423262.

The previous prime is 42423229. The next prime is 42423289. The reversal of 42423263 is 36232424.

It is an a-pointer prime, because the next prime (42423289) can be obtained adding 42423263 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42423263 - 2²² = 38228959 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42423203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21211631 + 21211632.

It is an arithmetic number, because the mean of its divisors is an integer number (21211632).

Almost surely, 2^42423263 is an apocalyptic number.

42423263 is a deficient number, since it is larger than the sum of its proper divisors (1).

42423263 is an equidigital number, since it uses as much as digits as its factorization.

42423263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 26.

The square root of 42423263 is about 6513.3142869049. The cubic root of 42423263 is about 348.7664411600.

Adding to 42423263 its reverse (36232424), we get a palindrome (78655687).

The spelling of 42423263 in words is "forty-two million, four hundred twenty-three thousand, two hundred sixty-three".