2857342 has 4 divisors (see below), whose sum is σ = 4286016. Its totient is φ = 1428670.

The previous prime is 2857339. The next prime is 2857357. The reversal of 2857342 is 2437582.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 714334 + ... + 714337.

It is an arithmetic number, because the mean of its divisors is an integer number (1071504).

2^2857342 is an apocalyptic number.

2857342 is a deficient number, since it is larger than the sum of its proper divisors (1428674).

2857342 is a wasteful number, since it uses less digits than its factorization.

2857342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428673.

The product of its digits is 13440, while the sum is 31.

The square root of 2857342 is about 1690.3674156822. The cubic root of 2857342 is about 141.9016378919.

Adding to 2857342 its product of digits (13440), we get a palindrome (2870782).

The spelling of 2857342 in words is "two million, eight hundred fifty-seven thousand, three hundred forty-two".