308442 has 8 divisors (see below), whose sum is σ = 616896. Its totient is φ = 102812.

The previous prime is 308437. The next prime is 308447. The reversal of 308442 is 244803.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (308437) and next prime (308447).

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

308442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (308447) by changing a digit.

308442 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, 25698 + ... + 25709.

It is an arithmetic number, because the mean of its divisors is an integer number (77112).

2³⁰⁸⁴⁴² is an apocalyptic number.

308442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308442 is a wasteful number, since it uses less digits than its factorization.

308442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51412.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 308442 is about 555.3755486155. The cubic root of 308442 is about 67.5654235370.

The spelling of 308442 in words is "three hundred eight thousand, four hundred forty-two".