1042425257 has 2 divisors, whose sum is σ = 1042425258. Its totient is φ = 1042425256.

The previous prime is 1042425239. The next prime is 1042425259. The reversal of 1042425257 is 7525242401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1040127001 + 2298256 = 32251^2 + 1516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042425257 - 2¹⁸ = 1042163113 is a prime.

Together with 1042425259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1042425259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521212628 + 521212629.

It is an arithmetic number, because the mean of its divisors is an integer number (521212629).

Almost surely, 2^1042425257 is an apocalyptic number.

It is an amenable number.

1042425257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042425257 is an equidigital number, since it uses as much as digits as its factorization.

1042425257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 1042425257 is about 32286.6111104897. The cubic root of 1042425257 is about 1013.9463475328.

Adding to 1042425257 its reverse (7525242401), we get a palindrome (8567667658).

The spelling of 1042425257 in words is "one billion, forty-two million, four hundred twenty-five thousand, two hundred fifty-seven".