42913693 has 2 divisors, whose sum is σ = 42913694. Its totient is φ = 42913692.

The previous prime is 42913687. The next prime is 42913711. The reversal of 42913693 is 39631924.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33895684 + 9018009 = 5822^2 + 3003^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42913693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42913993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21456846 + 21456847.

It is an arithmetic number, because the mean of its divisors is an integer number (21456847).

Almost surely, 2^42913693 is an apocalyptic number.

It is an amenable number.

42913693 is a deficient number, since it is larger than the sum of its proper divisors (1).

42913693 is an equidigital number, since it uses as much as digits as its factorization.

42913693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 42913693 is about 6550.8543717595. The cubic root of 42913693 is about 350.1052554182.

The spelling of 42913693 in words is "forty-two million, nine hundred thirteen thousand, six hundred ninety-three".