42385043131 has 2 divisors, whose sum is σ = 42385043132. Its totient is φ = 42385043130.

The previous prime is 42385043089. The next prime is 42385043137. The reversal of 42385043131 is 13134058324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42385043131 - 2⁹ = 42385042619 is a prime.

It is a super-2 number, since 2×42385043131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42385043137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21192521565 + 21192521566.

It is an arithmetic number, because the mean of its divisors is an integer number (21192521566).

Almost surely, 2^42385043131 is an apocalyptic number.

42385043131 is a deficient number, since it is larger than the sum of its proper divisors (1).

42385043131 is an equidigital number, since it uses as much as digits as its factorization.

42385043131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 42385043131 in words is "forty-two billion, three hundred eighty-five million, forty-three thousand, one hundred thirty-one".