42271223 has 2 divisors, whose sum is σ = 42271224. Its totient is φ = 42271222.

The previous prime is 42271169. The next prime is 42271237. The reversal of 42271223 is 32217224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42271223 - 2⁸ = 42270967 is a prime.

It is equal to p_2563124 and since 42271223 and 2563124 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42271423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21135611 + 21135612.

It is an arithmetic number, because the mean of its divisors is an integer number (21135612).

Almost surely, 2^42271223 is an apocalyptic number.

42271223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42271223 is an equidigital number, since it uses as much as digits as its factorization.

42271223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 23.

The square root of 42271223 is about 6501.6323334990. The cubic root of 42271223 is about 348.3492964203.

Adding to 42271223 its reverse (32217224), we get a palindrome (74488447).

The spelling of 42271223 in words is "forty-two million, two hundred seventy-one thousand, two hundred twenty-three".