1142815 has 16 divisors (see below), whose sum is σ = 1449216. Its totient is φ = 864000.

The previous prime is 1142809. The next prime is 1142821. The reversal of 1142815 is 5182411.

It is an interprime number because it is at equal distance from previous prime (1142809) and next prime (1142821).

It is not a de Polignac number, because 1142815 - 2⁵ = 1142783 is a prime.

It is a super-2 number, since 2×1142815² = 2612052248450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11265 + ... + 11365.

It is an arithmetic number, because the mean of its divisors is an integer number (90576).

2^1142815 is an apocalyptic number.

1142815 is a deficient number, since it is larger than the sum of its proper divisors (306401).

1142815 is a wasteful number, since it uses less digits than its factorization.

1142815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its digits is 320, while the sum is 22.

The square root of 1142815 is about 1069.0252569514. The cubic root of 1142815 is about 104.5503065858.

The spelling of 1142815 in words is "one million, one hundred forty-two thousand, eight hundred fifteen".