22042259 has 4 divisors (see below), whose sum is σ = 22051704. Its totient is φ = 22032816.

The previous prime is 22042249. The next prime is 22042301. The reversal of 22042259 is 95224022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22042259 - 2⁴ = 22042243 is a prime.

It is a super-2 number, since 2×22042259² = 971722363646162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22042219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (5512926).

Almost surely, 2^22042259 is an apocalyptic number.

22042259 is a deficient number, since it is larger than the sum of its proper divisors (9445).

22042259 is an equidigital number, since it uses as much as digits as its factorization.

22042259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9444.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22042259 is about 4694.9184231465. The cubic root of 22042259 is about 280.3832294951.

The spelling of 22042259 in words is "twenty-two million, forty-two thousand, two hundred fifty-nine".