42797617 has 2 divisors, whose sum is σ = 42797618. Its totient is φ = 42797616.

The previous prime is 42797611. The next prime is 42797627. The reversal of 42797617 is 71679724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 404496 = 6511^2 + 636^2 .

It is a cyclic number.

It is not a de Polignac number, because 42797617 - 2³ = 42797609 is a prime.

It is not a weakly prime, because it can be changed into another prime (42797611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21398808 + 21398809.

It is an arithmetic number, because the mean of its divisors is an integer number (21398809).

Almost surely, 2^42797617 is an apocalyptic number.

It is an amenable number.

42797617 is a deficient number, since it is larger than the sum of its proper divisors (1).

42797617 is an equidigital number, since it uses as much as digits as its factorization.

42797617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148176, while the sum is 43.

The square root of 42797617 is about 6541.9887648941. The cubic root of 42797617 is about 349.7893072063.

The spelling of 42797617 in words is "forty-two million, seven hundred ninety-seven thousand, six hundred seventeen".