42519293 has 2 divisors, whose sum is σ = 42519294. Its totient is φ = 42519292.

The previous prime is 42519287. The next prime is 42519311. The reversal of 42519293 is 39291524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42484324 + 34969 = 6518^2 + 187^2 .

It is a cyclic number.

It is not a de Polignac number, because 42519293 - 2⁴ = 42519277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42519493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21259646 + 21259647.

It is an arithmetic number, because the mean of its divisors is an integer number (21259647).

Almost surely, 2^42519293 is an apocalyptic number.

It is an amenable number.

42519293 is a deficient number, since it is larger than the sum of its proper divisors (1).

42519293 is an equidigital number, since it uses as much as digits as its factorization.

42519293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 35.

The square root of 42519293 is about 6520.6819428646. The cubic root of 42519293 is about 349.0294006753.

The spelling of 42519293 in words is "forty-two million, five hundred nineteen thousand, two hundred ninety-three".