2142866 has 16 divisors (see below), whose sum is σ = 3529440. Its totient is φ = 967680.

The previous prime is 2142857. The next prime is 2142883. The reversal of 2142866 is 6682412.

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, 5465 + ... + 5843.

It is an arithmetic number, because the mean of its divisors is an integer number (220590).

2^2142866 is an apocalyptic number.

2142866 is a deficient number, since it is larger than the sum of its proper divisors (1386574).

2142866 is a wasteful number, since it uses less digits than its factorization.

2142866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its digits is 4608, while the sum is 29.

The square root of 2142866 is about 1463.8531347099. The cubic root of 2142866 is about 128.9233765662.

The spelling of 2142866 in words is "two million, one hundred forty-two thousand, eight hundred sixty-six".