308042 has 8 divisors (see below), whose sum is σ = 528096. Its totient is φ = 132012.

The previous prime is 308041. The next prime is 308051. The reversal of 308042 is 240803.

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

It is a self number, because there is not a number n which added to its sum of digits gives 308042.

It is not an unprimeable number, because it can be changed into a prime (308041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10988 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (66012).

2³⁰⁸⁰⁴² is an apocalyptic number.

308042 is a deficient number, since it is larger than the sum of its proper divisors (220054).

308042 is a wasteful number, since it uses less digits than its factorization.

308042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22012.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 308042 is about 555.0153151040. The cubic root of 308042 is about 67.5362037153.

Subtracting from 308042 its sum of digits (17), we obtain a square (308025 = 555²).

Adding to 308042 its reverse (240803), we get a palindrome (548845).

The spelling of 308042 in words is "three hundred eight thousand, forty-two".