22042434257 has 2 divisors, whose sum is σ = 22042434258. Its totient is φ = 22042434256.

The previous prime is 22042434247. The next prime is 22042434283. The reversal of 22042434257 is 75243424022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21078393856 + 964040401 = 145184^2 + 31049^2 .

It is a cyclic number.

It is not a de Polignac number, because 22042434257 - 2¹² = 22042430161 is a prime.

It is not a weakly prime, because it can be changed into another prime (22042434217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021217128 + 11021217129.

It is an arithmetic number, because the mean of its divisors is an integer number (11021217129).

Almost surely, 2^22042434257 is an apocalyptic number.

It is an amenable number.

22042434257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22042434257 is an equidigital number, since it uses as much as digits as its factorization.

22042434257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 35.

Adding to 22042434257 its reverse (75243424022), we get a palindrome (97285858279).

The spelling of 22042434257 in words is "twenty-two billion, forty-two million, four hundred thirty-four thousand, two hundred fifty-seven".