342005399 has 4 divisors (see below), whose sum is σ = 342045264. Its totient is φ = 341965536.

The previous prime is 342005387. The next prime is 342005407. The reversal of 342005399 is 993500243.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 993500243 = 107 ⋅9285049.

It is a cyclic number.

It is not a de Polignac number, because 342005399 - 2⁸ = 342005143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342005309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187 + ... + 26180.

It is an arithmetic number, because the mean of its divisors is an integer number (85511316).

Almost surely, 2^342005399 is an apocalyptic number.

342005399 is a deficient number, since it is larger than the sum of its proper divisors (39865).

342005399 is a wasteful number, since it uses less digits than its factorization.

342005399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39864.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 342005399 is about 18493.3879805729. The cubic root of 342005399 is about 699.3227456438.

The spelling of 342005399 in words is "three hundred forty-two million, five thousand, three hundred ninety-nine".