1142311433 has 4 divisors (see below), whose sum is σ = 1149587460. Its totient is φ = 1135035408.

The previous prime is 1142311427. The next prime is 1142311441. The reversal of 1142311433 is 3341132411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3341132411 = 197 ⋅16960063.

It can be written as a sum of positive squares in 2 ways, for example, as 110103049 + 1032208384 = 10493^2 + 32128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142311433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142311399 and 1142311408.

It is not an unprimeable number, because it can be changed into a prime (1142311133) 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, 3637778 + ... + 3638091.

It is an arithmetic number, because the mean of its divisors is an integer number (287396865).

Almost surely, 2^1142311433 is an apocalyptic number.

It is an amenable number.

1142311433 is a deficient number, since it is larger than the sum of its proper divisors (7276027).

1142311433 is an equidigital number, since it uses as much as digits as its factorization.

1142311433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7276026.

The product of its digits is 864, while the sum is 23.

The square root of 1142311433 is about 33798.0980677907. The cubic root of 1142311433 is about 1045.3494807227.

Adding to 1142311433 its reverse (3341132411), we get a palindrome (4483443844).

The spelling of 1142311433 in words is "one billion, one hundred forty-two million, three hundred eleven thousand, four hundred thirty-three".