342638539 has 2 divisors, whose sum is σ = 342638540. Its totient is φ = 342638538.

The previous prime is 342638489. The next prime is 342638573. The reversal of 342638539 is 935836243.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 342638539 - 2¹¹ = 342636491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342638495 and 342638504.

It is not a weakly prime, because it can be changed into another prime (342638239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171319269 + 171319270.

It is an arithmetic number, because the mean of its divisors is an integer number (171319270).

Almost surely, 2^342638539 is an apocalyptic number.

342638539 is a deficient number, since it is larger than the sum of its proper divisors (1).

342638539 is an equidigital number, since it uses as much as digits as its factorization.

342638539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 342638539 is about 18510.4980754166. The cubic root of 342638539 is about 699.7540217372.

The spelling of 342638539 in words is "three hundred forty-two million, six hundred thirty-eight thousand, five hundred thirty-nine".