2242142561 has 2 divisors, whose sum is σ = 2242142562. Its totient is φ = 2242142560.

The previous prime is 2242142509. The next prime is 2242142579. The reversal of 2242142561 is 1652412422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2193142561 + 49000000 = 46831^2 + 7000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2242142561 - 2²² = 2237948257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2242142261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121071280 + 1121071281.

It is an arithmetic number, because the mean of its divisors is an integer number (1121071281).

Almost surely, 2^2242142561 is an apocalyptic number.

It is an amenable number.

2242142561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2242142561 is an equidigital number, since it uses as much as digits as its factorization.

2242142561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 2242142561 is about 47351.2677866179. The cubic root of 2242142561 is about 1308.8435613230.

Adding to 2242142561 its reverse (1652412422), we get a palindrome (3894554983).

The spelling of 2242142561 in words is "two billion, two hundred forty-two million, one hundred forty-two thousand, five hundred sixty-one".