318142 has 8 divisors (see below), whose sum is σ = 520632. Its totient is φ = 144600.

The previous prime is 318137. The next prime is 318161. The reversal of 318142 is 241813.

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

It is a congruent number.

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, 7209 + ... + 7252.

It is an arithmetic number, because the mean of its divisors is an integer number (65079).

2³¹⁸¹⁴² is an apocalyptic number.

318142 is a deficient number, since it is larger than the sum of its proper divisors (202490).

318142 is a wasteful number, since it uses less digits than its factorization.

318142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14474.

The product of its digits is 192, while the sum is 19.

The square root of 318142 is about 564.0407786676. The cubic root of 318142 is about 68.2664001878.

Adding to 318142 its reverse (241813), we get a palindrome (559955).

It can be divided in two parts, 3181 and 42, that added together give a palindrome (3223).

The spelling of 318142 in words is "three hundred eighteen thousand, one hundred forty-two".