42935257 has 2 divisors, whose sum is σ = 42935258. Its totient is φ = 42935256.

The previous prime is 42935239. The next prime is 42935267. The reversal of 42935257 is 75253924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26378496 + 16556761 = 5136^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 42935257 - 2⁷ = 42935129 is a prime.

It is a Chen prime.

It is the 6553-rd Hogben number.

It is not a weakly prime, because it can be changed into another prime (42935237) by changing a digit.

It is a nontrivial repunit in base 6552.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21467628 + 21467629.

It is an arithmetic number, because the mean of its divisors is an integer number (21467629).

Almost surely, 2^42935257 is an apocalyptic number.

It is an amenable number.

42935257 is a deficient number, since it is larger than the sum of its proper divisors (1).

42935257 is an equidigital number, since it uses as much as digits as its factorization.

42935257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 42935257 is about 6552.5000572301. The cubic root of 42935257 is about 350.1638878732.

The spelling of 42935257 in words is "forty-two million, nine hundred thirty-five thousand, two hundred fifty-seven".