42042227 has 2 divisors, whose sum is σ = 42042228. Its totient is φ = 42042226.

The previous prime is 42042211. The next prime is 42042263. The reversal of 42042227 is 72224024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42042227 - 2⁴ = 42042211 is a prime.

It is a super-2 number, since 2×42042227² = 3535097702239058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42042527) 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, 21021113 + 21021114.

It is an arithmetic number, because the mean of its divisors is an integer number (21021114).

Almost surely, 2^42042227 is an apocalyptic number.

42042227 is a deficient number, since it is larger than the sum of its proper divisors (1).

42042227 is an equidigital number, since it uses as much as digits as its factorization.

42042227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 42042227 is about 6483.9977637257. The cubic root of 42042227 is about 347.7191192607.

The spelling of 42042227 in words is "forty-two million, forty-two thousand, two hundred twenty-seven".