1143761 has 4 divisors (see below), whose sum is σ = 1152624. Its totient is φ = 1134900.

The previous prime is 1143749. The next prime is 1143763. The reversal of 1143761 is 1673411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1143761 - 2⁶ = 1143697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4235 + ... + 4496.

It is an arithmetic number, because the mean of its divisors is an integer number (288156).

2^1143761 is an apocalyptic number.

It is an amenable number.

1143761 is a deficient number, since it is larger than the sum of its proper divisors (8863).

1143761 is an equidigital number, since it uses as much as digits as its factorization.

1143761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8862.

The product of its digits is 504, while the sum is 23.

The square root of 1143761 is about 1069.4676245684. The cubic root of 1143761 is about 104.5791468654.

The spelling of 1143761 in words is "one million, one hundred forty-three thousand, seven hundred sixty-one".