42929317 has 2 divisors, whose sum is σ = 42929318. Its totient is φ = 42929316.

The previous prime is 42929297. The next prime is 42929347. The reversal of 42929317 is 71392924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41293476 + 1635841 = 6426^2 + 1279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42929317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42929347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21464658 + 21464659.

It is an arithmetic number, because the mean of its divisors is an integer number (21464659).

Almost surely, 2^42929317 is an apocalyptic number.

It is an amenable number.

42929317 is a deficient number, since it is larger than the sum of its proper divisors (1).

42929317 is an equidigital number, since it uses as much as digits as its factorization.

42929317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 42929317 is about 6552.0467794423. The cubic root of 42929317 is about 350.1477389895.

The spelling of 42929317 in words is "forty-two million, nine hundred twenty-nine thousand, three hundred seventeen".