1142807 has 4 divisors (see below), whose sum is σ = 1147296. Its totient is φ = 1138320.

The previous prime is 1142789. The next prime is 1142809. The reversal of 1142807 is 7082411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142809) 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, 1838 + ... + 2379.

It is an arithmetic number, because the mean of its divisors is an integer number (286824).

2^1142807 is an apocalyptic number.

1142807 is a deficient number, since it is larger than the sum of its proper divisors (4489).

1142807 is an equidigital number, since it uses as much as digits as its factorization.

1142807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4488.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1142807 is about 1069.0215152185. The cubic root of 1142807 is about 104.5500626256.

The spelling of 1142807 in words is "one million, one hundred forty-two thousand, eight hundred seven".