42397357 has 2 divisors, whose sum is σ = 42397358. Its totient is φ = 42397356.

The previous prime is 42397339. The next prime is 42397361. The reversal of 42397357 is 75379324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42367081 + 30276 = 6509^2 + 174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42397357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42397307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21198678 + 21198679.

It is an arithmetic number, because the mean of its divisors is an integer number (21198679).

Almost surely, 2^42397357 is an apocalyptic number.

It is an amenable number.

42397357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42397357 is an equidigital number, since it uses as much as digits as its factorization.

42397357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 40.

The square root of 42397357 is about 6511.3252875279. The cubic root of 42397357 is about 348.6954346529.

The spelling of 42397357 in words is "forty-two million, three hundred ninety-seven thousand, three hundred fifty-seven".