1857142 has 16 divisors (see below), whose sum is σ = 3215520. Its totient is φ = 787968.

The previous prime is 1857139. The next prime is 1857151. The reversal of 1857142 is 2417581.

It is a self number, because there is not a number n which added to its sum of digits gives 1857142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918 + ... + 2134.

It is an arithmetic number, because the mean of its divisors is an integer number (200970).

2^1857142 is an apocalyptic number.

1857142 is a deficient number, since it is larger than the sum of its proper divisors (1358378).

1857142 is a wasteful number, since it uses less digits than its factorization.

1857142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335.

The product of its digits is 2240, while the sum is 28.

The square root of 1857142 is about 1362.7699732530. The cubic root of 1857142 is about 122.9178732174.

The spelling of 1857142 in words is "one million, eight hundred fifty-seven thousand, one hundred forty-two".