1142764 has 12 divisors (see below), whose sum is σ = 2285584. Its totient is φ = 489744.

The previous prime is 1142759. The next prime is 1142773. The reversal of 1142764 is 4672411.

1142764 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20379 + ... + 20434.

2^1142764 is an apocalyptic number.

1142764 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1142764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142764 is a wasteful number, since it uses less digits than its factorization.

1142764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40824 (or 40822 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 1142764 is about 1069.0014031796. The cubic root of 1142764 is about 104.5487513195.

The spelling of 1142764 in words is "one million, one hundred forty-two thousand, seven hundred sixty-four".