306442 has 8 divisors (see below), whose sum is σ = 486756. Its totient is φ = 144192.

The previous prime is 306437. The next prime is 306457. The reversal of 306442 is 244603.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 5041 = 549^2 + 71^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4473 + ... + 4540.

2³⁰⁶⁴⁴² is an apocalyptic number.

306442 is a deficient number, since it is larger than the sum of its proper divisors (180314).

306442 is a wasteful number, since it uses less digits than its factorization.

306442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9032.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 306442 is about 553.5720368660. The cubic root of 306442 is about 67.4190708185.

The spelling of 306442 in words is "three hundred six thousand, four hundred forty-two".