1142973443 has 4 divisors (see below), whose sum is σ = 1203129960. Its totient is φ = 1082816928.

The previous prime is 1142973437. The next prime is 1142973451. The reversal of 1142973443 is 3443792411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142973443 - 2²² = 1138779139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142973397 and 1142973406.

It is not an unprimeable number, because it can be changed into a prime (1142973463) 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, 30078230 + ... + 30078267.

It is an arithmetic number, because the mean of its divisors is an integer number (300782490).

Almost surely, 2^1142973443 is an apocalyptic number.

1142973443 is a deficient number, since it is larger than the sum of its proper divisors (60156517).

1142973443 is an equidigital number, since it uses as much as digits as its factorization.

1142973443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60156516.

The product of its digits is 72576, while the sum is 38.

The square root of 1142973443 is about 33807.8902476922. The cubic root of 1142973443 is about 1045.5513807612.

The spelling of 1142973443 in words is "one billion, one hundred forty-two million, nine hundred seventy-three thousand, four hundred forty-three".