1142771 has 8 divisors (see below), whose sum is σ = 1328640. Its totient is φ = 962568.

The previous prime is 1142759. The next prime is 1142773. The reversal of 1142771 is 1772411.

1142771 = T₁₃ + T₁₄ + ... + T₁₈₉.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142771 - 2⁶ = 1142707 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 (1142773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 1796.

It is an arithmetic number, because the mean of its divisors is an integer number (166080).

2^1142771 is an apocalyptic number.

1142771 is a deficient number, since it is larger than the sum of its proper divisors (185869).

1142771 is an equidigital number, since it uses as much as digits as its factorization.

1142771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833.

The product of its digits is 392, while the sum is 23.

The square root of 1142771 is about 1069.0046772582. The cubic root of 1142771 is about 104.5489647902.

The spelling of 1142771 in words is "one million, one hundred forty-two thousand, seven hundred seventy-one".