1142858 has 8 divisors (see below), whose sum is σ = 1727040. Its totient is φ = 567180.

The previous prime is 1142851. The next prime is 1142863. The reversal of 1142858 is 8582411.

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

It is a super-2 number, since 2×1142858² = 2612248816328, which contains 22 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142858.

It is not an unprimeable number, because it can be changed into a prime (1142851) 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, 1778 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (215880).

2^1142858 is an apocalyptic number.

1142858 is a deficient number, since it is larger than the sum of its proper divisors (584182).

1142858 is a wasteful number, since it uses less digits than its factorization.

1142858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4252.

The product of its digits is 2560, while the sum is 29.

The square root of 1142858 is about 1069.0453685415. The cubic root of 1142858 is about 104.5516178528.

The spelling of 1142858 in words is "one million, one hundred forty-two thousand, eight hundred fifty-eight".