307442 has 8 divisors (see below), whose sum is σ = 463536. Its totient is φ = 152932.

The previous prime is 307423. The next prime is 307451. The reversal of 307442 is 244703.

It is a happy number.

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

It is an unprimeable number.

307442 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 915.

It is an arithmetic number, because the mean of its divisors is an integer number (57942).

2³⁰⁷⁴⁴² is an apocalyptic number.

307442 is a deficient number, since it is larger than the sum of its proper divisors (156094).

307442 is a wasteful number, since it uses less digits than its factorization.

307442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 307442 is about 554.4745260154. The cubic root of 307442 is about 67.4923265168.

The spelling of 307442 in words is "three hundred seven thousand, four hundred forty-two", and thus it is an iban number.