397142 has 4 divisors (see below), whose sum is σ = 595716. Its totient is φ = 198570.

The previous prime is 397127. The next prime is 397151. The reversal of 397142 is 241793.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99284 + ... + 99287.

It is an arithmetic number, because the mean of its divisors is an integer number (148929).

2³⁹⁷¹⁴² is an apocalyptic number.

397142 is a deficient number, since it is larger than the sum of its proper divisors (198574).

397142 is a wasteful number, since it uses less digits than its factorization.

397142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198573.

The product of its digits is 1512, while the sum is 26.

The square root of 397142 is about 630.1920342245. The cubic root of 397142 is about 73.5047276642.

The spelling of 397142 in words is "three hundred ninety-seven thousand, one hundred forty-two".