22142797 has 2 divisors, whose sum is σ = 22142798. Its totient is φ = 22142796.

The previous prime is 22142749. The next prime is 22142803. The reversal of 22142797 is 79724122.

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., 20331081 + 1811716 = 4509^2 + 1346^2 .

It is a cyclic number.

It is not a de Polignac number, because 22142797 - 2⁷ = 22142669 is a prime.

It is equal to p_1397662 and since 22142797 and 1397662 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22142707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11071398 + 11071399.

It is an arithmetic number, because the mean of its divisors is an integer number (11071399).

Almost surely, 2^22142797 is an apocalyptic number.

It is an amenable number.

22142797 is a deficient number, since it is larger than the sum of its proper divisors (1).

22142797 is an equidigital number, since it uses as much as digits as its factorization.

22142797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 34.

The square root of 22142797 is about 4705.6133500321. The cubic root of 22142797 is about 280.8088727875.

The spelling of 22142797 in words is "twenty-two million, one hundred forty-two thousand, seven hundred ninety-seven".