42422641 has 2 divisors, whose sum is σ = 42422642. Its totient is φ = 42422640.

The previous prime is 42422587. The next prime is 42422669. The reversal of 42422641 is 14622424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 20295025 = 4704^2 + 4505^2 .

It is a cyclic number.

It is not a de Polignac number, because 42422641 - 2⁹ = 42422129 is a prime.

It is not a weakly prime, because it can be changed into another prime (42422141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21211320 + 21211321.

It is an arithmetic number, because the mean of its divisors is an integer number (21211321).

Almost surely, 2^42422641 is an apocalyptic number.

It is an amenable number.

42422641 is a deficient number, since it is larger than the sum of its proper divisors (1).

42422641 is an equidigital number, since it uses as much as digits as its factorization.

42422641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 25.

The square root of 42422641 is about 6513.2665383815. The cubic root of 42422641 is about 348.7647366409.

The spelling of 42422641 in words is "forty-two million, four hundred twenty-two thousand, six hundred forty-one".