42913206493 has 4 divisors (see below), whose sum is σ = 43959870108. Its totient is φ = 41866542880.

The previous prime is 42913206491. The next prime is 42913206563. The reversal of 42913206493 is 39460231924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18435665284 + 24477541209 = 135778^2 + 156453^2 .

It is a cyclic number.

It is not a de Polignac number, because 42913206493 - 2¹ = 42913206491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42913206491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523331746 + ... + 523331827.

It is an arithmetic number, because the mean of its divisors is an integer number (10989967527).

Almost surely, 2^42913206493 is an apocalyptic number.

It is an amenable number.

42913206493 is a deficient number, since it is larger than the sum of its proper divisors (1046663615).

42913206493 is a wasteful number, since it uses less digits than its factorization.

42913206493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046663614.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 42913206493 in words is "forty-two billion, nine hundred thirteen million, two hundred six thousand, four hundred ninety-three".