42043131293 has 2 divisors, whose sum is σ = 42043131294. Its totient is φ = 42043131292.

The previous prime is 42043131257. The next prime is 42043131349. The reversal of 42043131293 is 39213134024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39418925764 + 2624205529 = 198542^2 + 51227^2 .

It is a cyclic number.

It is not a de Polignac number, because 42043131293 - 2²⁰ = 42042082717 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 (42043131253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21021565646 + 21021565647.

It is an arithmetic number, because the mean of its divisors is an integer number (21021565647).

Almost surely, 2^42043131293 is an apocalyptic number.

It is an amenable number.

42043131293 is a deficient number, since it is larger than the sum of its proper divisors (1).

42043131293 is an equidigital number, since it uses as much as digits as its factorization.

42043131293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 42043131293 in words is "forty-two billion, forty-three million, one hundred thirty-one thousand, two hundred ninety-three".