1142867 has 8 divisors (see below), whose sum is σ = 1259712. Its totient is φ = 1028200.

The previous prime is 1142863. The next prime is 1142881. The reversal of 1142867 is 7682411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142867 - 2² = 1142863 is a prime.

It is a super-2 number, since 2×1142867² = 2612289959378, which contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 692 + ... + 1662.

It is an arithmetic number, because the mean of its divisors is an integer number (157464).

2^1142867 is an apocalyptic number.

1142867 is a deficient number, since it is larger than the sum of its proper divisors (116845).

1142867 is a wasteful number, since it uses less digits than its factorization.

1142867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089.

The product of its digits is 2688, while the sum is 29.

The square root of 1142867 is about 1069.0495778962. The cubic root of 1142867 is about 104.5518922999.

The spelling of 1142867 in words is "one million, one hundred forty-two thousand, eight hundred sixty-seven".