1142294331 has 4 divisors (see below), whose sum is σ = 1523059112. Its totient is φ = 761529552.

The previous prime is 1142294327. The next prime is 1142294353. The reversal of 1142294331 is 1334922411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1334922411 = 3 ⋅444974137.

It is not a de Polignac number, because 1142294331 - 2² = 1142294327 is a prime.

It is a super-2 number, since 2×1142294331² = 2609672677269475122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142294381) by changing a digit.

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, 190382386 + ... + 190382391.

It is an arithmetic number, because the mean of its divisors is an integer number (380764778).

Almost surely, 2^1142294331 is an apocalyptic number.

1142294331 is a deficient number, since it is larger than the sum of its proper divisors (380764781).

1142294331 is an equidigital number, since it uses as much as digits as its factorization.

1142294331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380764780.

The product of its digits is 5184, while the sum is 30.

The square root of 1142294331 is about 33797.8450644416. The cubic root of 1142294331 is about 1045.3442639153.

The spelling of 1142294331 in words is "one billion, one hundred forty-two million, two hundred ninety-four thousand, three hundred thirty-one".