1142868 has 12 divisors (see below), whose sum is σ = 2666720. Its totient is φ = 380952.

The previous prime is 1142863. The next prime is 1142881. The reversal of 1142868 is 8682411.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1142868² = 2612294530848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47608 + ... + 47631.

2^1142868 is an apocalyptic number.

It is an amenable number.

1142868 is an abundant number, since it is smaller than the sum of its proper divisors (1523852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142868 is a wasteful number, since it uses less digits than its factorization.

1142868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95246 (or 95244 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 1142868 is about 1069.0500456012. The cubic root of 1142868 is about 104.5519227939.

The spelling of 1142868 in words is "one million, one hundred forty-two thousand, eight hundred sixty-eight".