42398339 has 2 divisors, whose sum is σ = 42398340. Its totient is φ = 42398338.

The previous prime is 42398333. The next prime is 42398353. The reversal of 42398339 is 93389324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42398339 - 2¹⁶ = 42332803 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42398296 and 42398305.

It is not a weakly prime, because it can be changed into another prime (42398333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21199169 + 21199170.

It is an arithmetic number, because the mean of its divisors is an integer number (21199170).

Almost surely, 2^42398339 is an apocalyptic number.

42398339 is a deficient number, since it is larger than the sum of its proper divisors (1).

42398339 is an equidigital number, since it uses as much as digits as its factorization.

42398339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The square root of 42398339 is about 6511.4006941671. The cubic root of 42398339 is about 348.6981267726.

The spelling of 42398339 in words is "forty-two million, three hundred ninety-eight thousand, three hundred thirty-nine".