42974593 has 2 divisors, whose sum is σ = 42974594. Its totient is φ = 42974592.

The previous prime is 42974543. The next prime is 42974621. The reversal of 42974593 is 39547924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 685584 = 6503^2 + 828^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42974593 is a prime.

It is not a weakly prime, because it can be changed into another prime (42974513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21487296 + 21487297.

It is an arithmetic number, because the mean of its divisors is an integer number (21487297).

Almost surely, 2^42974593 is an apocalyptic number.

It is an amenable number.

42974593 is a deficient number, since it is larger than the sum of its proper divisors (1).

42974593 is an equidigital number, since it uses as much as digits as its factorization.

42974593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 42974593 is about 6555.5009724658. The cubic root of 42974593 is about 350.2707917974.

The spelling of 42974593 in words is "forty-two million, nine hundred seventy-four thousand, five hundred ninety-three".