1942857 has 12 divisors (see below), whose sum is σ = 3207360. Its totient is φ = 1110168.

The previous prime is 1942841. The next prime is 1942859. The reversal of 1942857 is 7582491.

It is not a de Polignac number, because 1942857 - 2⁴ = 1942841 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15357 + ... + 15482.

It is an arithmetic number, because the mean of its divisors is an integer number (267280).

2^1942857 is an apocalyptic number.

It is an amenable number.

1942857 is a deficient number, since it is larger than the sum of its proper divisors (1264503).

1942857 is a wasteful number, since it uses less digits than its factorization.

1942857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30852 (or 30849 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1942857 is about 1393.8640536293. The cubic root of 1942857 is about 124.7805643427.

The spelling of 1942857 in words is "one million, nine hundred forty-two thousand, eight hundred fifty-seven".