2642257 has 2 divisors, whose sum is σ = 2642258. Its totient is φ = 2642256.

The previous prime is 2642239. The next prime is 2642287. The reversal of 2642257 is 7522462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2070721 + 571536 = 1439^2 + 756^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642257 - 2¹⁵ = 2609489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321128 + 1321129.

It is an arithmetic number, because the mean of its divisors is an integer number (1321129).

2^2642257 is an apocalyptic number.

It is an amenable number.

2642257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642257 is an equidigital number, since it uses as much as digits as its factorization.

2642257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 28.

The square root of 2642257 is about 1625.5020762829. The cubic root of 2642257 is about 138.2478393039.

The spelling of 2642257 in words is "two million, six hundred forty-two thousand, two hundred fifty-seven".