42974357 has 2 divisors, whose sum is σ = 42974358. Its totient is φ = 42974356.

The previous prime is 42974311. The next prime is 42974359. The reversal of 42974357 is 75347924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40780996 + 2193361 = 6386^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 42974357 - 2⁶ = 42974293 is a prime.

Together with 42974359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42974359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21487178 + 21487179.

It is an arithmetic number, because the mean of its divisors is an integer number (21487179).

Almost surely, 2^42974357 is an apocalyptic number.

It is an amenable number.

42974357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42974357 is an equidigital number, since it uses as much as digits as its factorization.

42974357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 211680, while the sum is 41.

The square root of 42974357 is about 6555.4829722912. The cubic root of 42974357 is about 350.2701506119.

The spelling of 42974357 in words is "forty-two million, nine hundred seventy-four thousand, three hundred fifty-seven".