42258757 has 2 divisors, whose sum is σ = 42258758. Its totient is φ = 42258756.

The previous prime is 42258743. The next prime is 42258761. The reversal of 42258757 is 75785224.

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., 40972801 + 1285956 = 6401^2 + 1134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42258757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42258157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21129378 + 21129379.

It is an arithmetic number, because the mean of its divisors is an integer number (21129379).

Almost surely, 2^42258757 is an apocalyptic number.

It is an amenable number.

42258757 is a deficient number, since it is larger than the sum of its proper divisors (1).

42258757 is an equidigital number, since it uses as much as digits as its factorization.

42258757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 40.

The square root of 42258757 is about 6500.6735804838. The cubic root of 42258757 is about 348.3150497234.

The spelling of 42258757 in words is "forty-two million, two hundred fifty-eight thousand, seven hundred fifty-seven".