1142136331 has 8 divisors (see below), whose sum is σ = 1333071360. Its totient is φ = 958144488.

The previous prime is 1142136311. The next prime is 1142136343. The reversal of 1142136331 is 1336312411.

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

It is not a de Polignac number, because 1142136331 - 2⁵ = 1142136299 is a prime.

It is a super-2 number, since 2×1142136331² = 2608950797180283122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142136296 and 1142136305.

It is not an unprimeable number, because it can be changed into a prime (1142136301) 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 7 ways as a sum of consecutive naturals, for example, 1735441 + ... + 1736098.

It is an arithmetic number, because the mean of its divisors is an integer number (166633920).

Almost surely, 2^1142136331 is an apocalyptic number.

1142136331 is a deficient number, since it is larger than the sum of its proper divisors (190935029).

1142136331 is an equidigital number, since it uses as much as digits as its factorization.

1142136331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471593.

The product of its digits is 1296, while the sum is 25.

The square root of 1142136331 is about 33795.5075564786. The cubic root of 1142136331 is about 1045.2960650099.

Adding to 1142136331 its reverse (1336312411), we get a palindrome (2478448742).

The spelling of 1142136331 in words is "one billion, one hundred forty-two million, one hundred thirty-six thousand, three hundred thirty-one".