1142351191 has 4 divisors (see below), whose sum is σ = 1142439232. Its totient is φ = 1142263152.

The previous prime is 1142351149. The next prime is 1142351207. The reversal of 1142351191 is 1911532411.

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 1142351191 - 2⁹ = 1142350679 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 (1142351131) 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, 20295 + ... + 51928.

It is an arithmetic number, because the mean of its divisors is an integer number (285609808).

Almost surely, 2^1142351191 is an apocalyptic number.

1142351191 is a deficient number, since it is larger than the sum of its proper divisors (88041).

1142351191 is an equidigital number, since it uses as much as digits as its factorization.

1142351191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88040.

The product of its digits is 1080, while the sum is 28.

The square root of 1142351191 is about 33798.6862318641. The cubic root of 1142351191 is about 1045.3616083326.

The spelling of 1142351191 in words is "one billion, one hundred forty-two million, three hundred fifty-one thousand, one hundred ninety-one".