42508793 has 2 divisors, whose sum is σ = 42508794. Its totient is φ = 42508792.

The previous prime is 42508777. The next prime is 42508799. The reversal of 42508793 is 39780524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37112464 + 5396329 = 6092^2 + 2323^2 .

It is a cyclic number.

It is not a de Polignac number, because 42508793 - 2⁴ = 42508777 is a prime.

It is not a weakly prime, because it can be changed into another prime (42508799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21254396 + 21254397.

It is an arithmetic number, because the mean of its divisors is an integer number (21254397).

Almost surely, 2^42508793 is an apocalyptic number.

It is an amenable number.

42508793 is a deficient number, since it is larger than the sum of its proper divisors (1).

42508793 is an equidigital number, since it uses as much as digits as its factorization.

42508793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 42508793 is about 6519.8767626390. The cubic root of 42508793 is about 349.0006677546. Note that the first 3 decimals are identical.

The spelling of 42508793 in words is "forty-two million, five hundred eight thousand, seven hundred ninety-three".