42985693 has 2 divisors, whose sum is σ = 42985694. Its totient is φ = 42985692.

The previous prime is 42985669. The next prime is 42985697. The reversal of 42985693 is 39658924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31843449 + 11142244 = 5643^2 + 3338^2 .

It is a cyclic number.

It is not a de Polignac number, because 42985693 - 2⁵ = 42985661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42985697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21492846 + 21492847.

It is an arithmetic number, because the mean of its divisors is an integer number (21492847).

Almost surely, 2^42985693 is an apocalyptic number.

It is an amenable number.

42985693 is a deficient number, since it is larger than the sum of its proper divisors (1).

42985693 is an equidigital number, since it uses as much as digits as its factorization.

42985693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 46.

The square root of 42985693 is about 6556.3475350228. The cubic root of 42985693 is about 350.3009465998.

The spelling of 42985693 in words is "forty-two million, nine hundred eighty-five thousand, six hundred ninety-three".