342145439 has 2 divisors, whose sum is σ = 342145440. Its totient is φ = 342145438.

The previous prime is 342145429. The next prime is 342145457. The reversal of 342145439 is 934541243.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342145439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342145399 and 342145408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (342145429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171072719 + 171072720.

It is an arithmetic number, because the mean of its divisors is an integer number (171072720).

Almost surely, 2^342145439 is an apocalyptic number.

342145439 is a deficient number, since it is larger than the sum of its proper divisors (1).

342145439 is an equidigital number, since it uses as much as digits as its factorization.

342145439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 342145439 is about 18497.1738111529. The cubic root of 342145439 is about 699.4181825324.

The spelling of 342145439 in words is "three hundred forty-two million, one hundred forty-five thousand, four hundred thirty-nine".