1142857886 has 8 divisors (see below), whose sum is σ = 1727373384. Its totient is φ = 567066760.

The previous prime is 1142857883. The next prime is 1142857901. The reversal of 1142857886 is 6887582411.

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

It is a super-2 number, since 2×1142857886² = 2612248295184777992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142857883) 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 3 ways as a sum of consecutive naturals, for example, 2180765 + ... + 2181288.

It is an arithmetic number, because the mean of its divisors is an integer number (215921673).

Almost surely, 2^1142857886 is an apocalyptic number.

1142857886 is a deficient number, since it is larger than the sum of its proper divisors (584515498).

1142857886 is a wasteful number, since it uses less digits than its factorization.

1142857886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4362186.

The product of its digits is 860160, while the sum is 50.

The square root of 1142857886 is about 33806.1811803700. The cubic root of 1142857886 is about 1045.5161437649.

The spelling of 1142857886 in words is "one billion, one hundred forty-two million, eight hundred fifty-seven thousand, eight hundred eighty-six".