1142231141 has 2 divisors, whose sum is σ = 1142231142. Its totient is φ = 1142231140.

The previous prime is 1142231117. The next prime is 1142231147. The reversal of 1142231141 is 1411322411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084319041 + 57912100 = 32929^2 + 7610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142231141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142231147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571115570 + 571115571.

It is an arithmetic number, because the mean of its divisors is an integer number (571115571).

Almost surely, 2^1142231141 is an apocalyptic number.

It is an amenable number.

1142231141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142231141 is an equidigital number, since it uses as much as digits as its factorization.

1142231141 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 1142231141 is about 33796.9102285993. The cubic root of 1142231141 is about 1045.3249879371.

Adding to 1142231141 its reverse (1411322411), we get a palindrome (2553553552).

The spelling of 1142231141 in words is "one billion, one hundred forty-two million, two hundred thirty-one thousand, one hundred forty-one".