42531793 has 2 divisors, whose sum is σ = 42531794. Its totient is φ = 42531792.

The previous prime is 42531781. The next prime is 42531809. The reversal of 42531793 is 39713524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38155329 + 4376464 = 6177^2 + 2092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42531793 is a prime.

It is not a weakly prime, because it can be changed into another prime (42531703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21265896 + 21265897.

It is an arithmetic number, because the mean of its divisors is an integer number (21265897).

Almost surely, 2^42531793 is an apocalyptic number.

It is an amenable number.

42531793 is a deficient number, since it is larger than the sum of its proper divisors (1).

42531793 is an equidigital number, since it uses as much as digits as its factorization.

42531793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 42531793 is about 6521.6403611361. The cubic root of 42531793 is about 349.0636003662.

The spelling of 42531793 in words is "forty-two million, five hundred thirty-one thousand, seven hundred ninety-three".