1142771411 has 4 divisors (see below), whose sum is σ = 1142860824. Its totient is φ = 1142682000.

The previous prime is 1142771407. The next prime is 1142771429. The reversal of 1142771411 is 1141772411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1142771411 - 2² = 1142771407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142771401) 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, 21530 + ... + 52431.

It is an arithmetic number, because the mean of its divisors is an integer number (285715206).

Almost surely, 2^1142771411 is an apocalyptic number.

1142771411 is a deficient number, since it is larger than the sum of its proper divisors (89413).

1142771411 is an equidigital number, since it uses as much as digits as its factorization.

1142771411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89412.

The product of its digits is 1568, while the sum is 29.

The square root of 1142771411 is about 33804.9021740930. The cubic root of 1142771411 is about 1045.4897732395.

The spelling of 1142771411 in words is "one billion, one hundred forty-two million, seven hundred seventy-one thousand, four hundred eleven".