305342 has 4 divisors (see below), whose sum is σ = 458016. Its totient is φ = 152670.

The previous prime is 305339. The next prime is 305351. The reversal of 305342 is 243503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243503 = 13 ⋅18731.

It is a self number, because there is not a number n which added to its sum of digits gives 305342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76334 + ... + 76337.

It is an arithmetic number, because the mean of its divisors is an integer number (114504).

2³⁰⁵³⁴² is an apocalyptic number.

305342 is a deficient number, since it is larger than the sum of its proper divisors (152674).

305342 is a wasteful number, since it uses less digits than its factorization.

305342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152673.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 305342 is about 552.5775963609. The cubic root of 305342 is about 67.3383052456.

Adding to 305342 its reverse (243503), we get a palindrome (548845).

The spelling of 305342 in words is "three hundred five thousand, three hundred forty-two".