42622369 has 2 divisors, whose sum is σ = 42622370. Its totient is φ = 42622368.

The previous prime is 42622309. The next prime is 42622387. The reversal of 42622369 is 96322624.

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., 42406144 + 216225 = 6512^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 42622369 - 2⁹ = 42621857 is a prime.

It is a super-2 number, since 2×42622369² = 3633332678344322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42622309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21311184 + 21311185.

It is an arithmetic number, because the mean of its divisors is an integer number (21311185).

Almost surely, 2^42622369 is an apocalyptic number.

It is an amenable number.

42622369 is a deficient number, since it is larger than the sum of its proper divisors (1).

42622369 is an equidigital number, since it uses as much as digits as its factorization.

42622369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 42622369 is about 6528.5809330972. The cubic root of 42622369 is about 349.3112140937.

The spelling of 42622369 in words is "forty-two million, six hundred twenty-two thousand, three hundred sixty-nine".