42249042239 has 2 divisors, whose sum is σ = 42249042240. Its totient is φ = 42249042238.

The previous prime is 42249042221. The next prime is 42249042287. The reversal of 42249042239 is 93224094224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42249042239 - 2³² = 37954074943 is a prime.

It is a super-2 number, since 2×42249042239² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42249042196 and 42249042205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42249042839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21124521119 + 21124521120.

It is an arithmetic number, because the mean of its divisors is an integer number (21124521120).

Almost surely, 2^42249042239 is an apocalyptic number.

42249042239 is a deficient number, since it is larger than the sum of its proper divisors (1).

42249042239 is an equidigital number, since it uses as much as digits as its factorization.

42249042239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 42249042239 in words is "forty-two billion, two hundred forty-nine million, forty-two thousand, two hundred thirty-nine".