22042049 has 2 divisors, whose sum is σ = 22042050. Its totient is φ = 22042048.

The previous prime is 22042037. The next prime is 22042057. The reversal of 22042049 is 94024022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13191424 + 8850625 = 3632^2 + 2975^2 .

It is a cyclic number.

It is not a de Polignac number, because 22042049 - 2²⁰ = 20993473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22042019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021024 + 11021025.

It is an arithmetic number, because the mean of its divisors is an integer number (11021025).

Almost surely, 2^22042049 is an apocalyptic number.

It is an amenable number.

22042049 is a deficient number, since it is larger than the sum of its proper divisors (1).

22042049 is an equidigital number, since it uses as much as digits as its factorization.

22042049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22042049 is about 4694.8960584873. The cubic root of 22042049 is about 280.3823390742.

The spelling of 22042049 in words is "twenty-two million, forty-two thousand, forty-nine".