1142311121 has 8 divisors (see below), whose sum is σ = 1309445184. Its totient is φ = 976163760.

The previous prime is 1142311087. The next prime is 1142311133. The reversal of 1142311121 is 1211132411.

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 1142311121 - 2²² = 1138116817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142311121.

It is not an unprimeable number, because it can be changed into a prime (1142311151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244190 + ... + 248823.

It is an arithmetic number, because the mean of its divisors is an integer number (163680648).

Almost surely, 2^1142311121 is an apocalyptic number.

It is an amenable number.

1142311121 is a deficient number, since it is larger than the sum of its proper divisors (167134063).

1142311121 is an equidigital number, since it uses as much as digits as its factorization.

1142311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493351.

The product of its digits is 48, while the sum is 17.

The square root of 1142311121 is about 33798.0934521461. The cubic root of 1142311121 is about 1045.3493855504.

Adding to 1142311121 its reverse (1211132411), we get a palindrome (2353443532).

The spelling of 1142311121 in words is "one billion, one hundred forty-two million, three hundred eleven thousand, one hundred twenty-one".