1142543140021 has 2 divisors, whose sum is σ = 1142543140022. Its totient is φ = 1142543140020.

The previous prime is 1142543139967. The next prime is 1142543140049. The reversal of 1142543140021 is 1200413452411.

It is a happy number.

It is an a-pointer prime, because the next prime (1142543140049) can be obtained adding 1142543140021 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1120612788100 + 21930351921 = 1058590^2 + 148089^2 .

It is an emirp because it is prime and its reverse (1200413452411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142543140021 - 2⁹ = 1142543139509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142543110021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571271570010 + 571271570011.

It is an arithmetic number, because the mean of its divisors is an integer number (571271570011).

Almost surely, 2^{1142543140021} is an apocalyptic number.

It is an amenable number.

1142543140021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142543140021 is an equidigital number, since it uses as much as digits as its factorization.

1142543140021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 1142543140021 its reverse (1200413452411), we get a palindrome (2342956592432).

The spelling of 1142543140021 in words is "one trillion, one hundred forty-two billion, five hundred forty-three million, one hundred forty thousand, twenty-one".