2127542257 has 2 divisors, whose sum is σ = 2127542258. Its totient is φ = 2127542256.

The previous prime is 2127542099. The next prime is 2127542293. The reversal of 2127542257 is 7522457212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2056713201 + 70829056 = 45351^2 + 8416^2 .

It is a cyclic number.

It is not a de Polignac number, because 2127542257 - 2¹⁹ = 2127017969 is a prime.

It is not a weakly prime, because it can be changed into another prime (2127552257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063771128 + 1063771129.

It is an arithmetic number, because the mean of its divisors is an integer number (1063771129).

Almost surely, 2^2127542257 is an apocalyptic number.

It is an amenable number.

2127542257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2127542257 is an equidigital number, since it uses as much as digits as its factorization.

2127542257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 37.

The square root of 2127542257 is about 46125.2886928635. The cubic root of 2127542257 is about 1286.1532858036.

Adding to 2127542257 its reverse (7522457212), we get a palindrome (9649999469).

The spelling of 2127542257 in words is "two billion, one hundred twenty-seven million, five hundred forty-two thousand, two hundred fifty-seven".