42875317 has 2 divisors, whose sum is σ = 42875318. Its totient is φ = 42875316.

The previous prime is 42875303. The next prime is 42875323. The reversal of 42875317 is 71357824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27185796 + 15689521 = 5214^2 + 3961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42875317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42875347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21437658 + 21437659.

It is an arithmetic number, because the mean of its divisors is an integer number (21437659).

Almost surely, 2^42875317 is an apocalyptic number.

It is an amenable number.

42875317 is a deficient number, since it is larger than the sum of its proper divisors (1).

42875317 is an equidigital number, since it uses as much as digits as its factorization.

42875317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 42875317 is about 6547.9246330421. The cubic root of 42875317 is about 350.0008625829. Note that the first 3 decimals are identical.

It can be divided in two parts, 4287 and 5317, that added together give a square (9604 = 98²).

The spelling of 42875317 in words is "forty-two million, eight hundred seventy-five thousand, three hundred seventeen".