1142775 has 24 divisors (see below), whose sum is σ = 2100560. Its totient is φ = 609120.

The previous prime is 1142773. The next prime is 1142777. The reversal of 1142775 is 5772411.

It is an interprime number because it is at equal distance from previous prime (1142773) and next prime (1142777).

It is not a de Polignac number, because 1142775 - 2¹ = 1142773 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172 + ... + 1521.

2^1142775 is an apocalyptic number.

1142775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1142775 is a deficient number, since it is larger than the sum of its proper divisors (957785).

1142775 is a wasteful number, since it uses less digits than its factorization.

1142775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1701 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 1142775 is about 1069.0065481558. The cubic root of 1142775 is about 104.5490867730.

The spelling of 1142775 in words is "one million, one hundred forty-two thousand, seven hundred seventy-five".