342920305 has 32 divisors (see below), whose sum is σ = 509612544. Its totient is φ = 215709696.

The previous prime is 342920299. The next prime is 342920323. The reversal of 342920305 is 503029243.

It is a cyclic number.

It is not a de Polignac number, because 342920305 - 2⁹ = 342919793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73729 + ... + 78241.

It is an arithmetic number, because the mean of its divisors is an integer number (15925392).

Almost surely, 2^342920305 is an apocalyptic number.

342920305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

342920305 is a deficient number, since it is larger than the sum of its proper divisors (166692239).

342920305 is a wasteful number, since it uses less digits than its factorization.

342920305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4705.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 342920305 is about 18518.1074896978. The cubic root of 342920305 is about 699.9457815149.

Adding to 342920305 its reverse (503029243), we get a palindrome (845949548).

The spelling of 342920305 in words is "three hundred forty-two million, nine hundred twenty thousand, three hundred five".