142243141 has 2 divisors, whose sum is σ = 142243142. Its totient is φ = 142243140.

The previous prime is 142243117. The next prime is 142243151. The reversal of 142243141 is 141342241.

It is a happy number.

142243141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140920641 + 1322500 = 11871^2 + 1150^2 .

It is an emirp because it is prime and its reverse (141342241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142243141 - 2¹³ = 142234949 is a prime.

It is a super-3 number, since 3×142243141³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142243151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121570 + 71121571.

It is an arithmetic number, because the mean of its divisors is an integer number (71121571).

Almost surely, 2^142243141 is an apocalyptic number.

It is an amenable number.

142243141 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243141 is an equidigital number, since it uses as much as digits as its factorization.

142243141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 142243141 is about 11926.5728941721. The cubic root of 142243141 is about 522.0079428532.

Adding to 142243141 its reverse (141342241), we get a palindrome (283585382).

The spelling of 142243141 in words is "one hundred forty-two million, two hundred forty-three thousand, one hundred forty-one".