42518227 has 2 divisors, whose sum is σ = 42518228. Its totient is φ = 42518226.

The previous prime is 42518213. The next prime is 42518239. The reversal of 42518227 is 72281524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42518227 - 2²³ = 34129619 is a prime.

It is not a weakly prime, because it can be changed into another prime (42518027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21259113 + 21259114.

It is an arithmetic number, because the mean of its divisors is an integer number (21259114).

Almost surely, 2^42518227 is an apocalyptic number.

42518227 is a deficient number, since it is larger than the sum of its proper divisors (1).

42518227 is an equidigital number, since it uses as much as digits as its factorization.

42518227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 31.

The square root of 42518227 is about 6520.6002024354. The cubic root of 42518227 is about 349.0264838155.

The spelling of 42518227 in words is "forty-two million, five hundred eighteen thousand, two hundred twenty-seven".