1142141321 has 2 divisors, whose sum is σ = 1142141322. Its totient is φ = 1142141320.

The previous prime is 1142141279. The next prime is 1142141323. The reversal of 1142141321 is 1231412411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 678342025 + 463799296 = 26045^2 + 21536^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142141321 - 2⁶ = 1142141257 is a prime.

Together with 1142141323, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142141293 and 1142141302.

It is not a weakly prime, because it can be changed into another prime (1142141323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571070660 + 571070661.

It is an arithmetic number, because the mean of its divisors is an integer number (571070661).

Almost surely, 2^1142141321 is an apocalyptic number.

It is an amenable number.

1142141321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142141321 is an equidigital number, since it uses as much as digits as its factorization.

1142141321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 20.

The square root of 1142141321 is about 33795.5813827784. The cubic root of 1142141321 is about 1045.2975873091.

Adding to 1142141321 its reverse (1231412411), we get a palindrome (2373553732).

The spelling of 1142141321 in words is "one billion, one hundred forty-two million, one hundred forty-one thousand, three hundred twenty-one".