42980317 has 2 divisors, whose sum is σ = 42980318. Its totient is φ = 42980316.

The previous prime is 42980309. The next prime is 42980359. The reversal of 42980317 is 71308924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23097636 + 19882681 = 4806^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 42980317 - 2³ = 42980309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42980387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21490158 + 21490159.

It is an arithmetic number, because the mean of its divisors is an integer number (21490159).

Almost surely, 2^42980317 is an apocalyptic number.

It is an amenable number.

42980317 is a deficient number, since it is larger than the sum of its proper divisors (1).

42980317 is an equidigital number, since it uses as much as digits as its factorization.

42980317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 42980317 is about 6555.9375378355. The cubic root of 42980317 is about 350.2863425439.

The spelling of 42980317 in words is "forty-two million, nine hundred eighty thousand, three hundred seventeen".