1012857 has 8 divisors (see below), whose sum is σ = 1356384. Its totient is φ = 672288.

The previous prime is 1012831. The next prime is 1012861. The reversal of 1012857 is 7582101.

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

It is not a de Polignac number, because 1012857 - 2⁸ = 1012601 is a prime.

1012857 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1012457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253 + ... + 1445.

It is an arithmetic number, because the mean of its divisors is an integer number (169548).

2^1012857 is an apocalyptic number.

It is an amenable number.

1012857 is a deficient number, since it is larger than the sum of its proper divisors (343527).

1012857 is a wasteful number, since it uses less digits than its factorization.

1012857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1012857 is about 1006.4079689669. The cubic root of 1012857 is about 100.4267429805.

Adding to 1012857 its reverse (7582101), we get a palindrome (8594958).

The spelling of 1012857 in words is "one million, twelve thousand, eight hundred fifty-seven".