142443137 has 2 divisors, whose sum is σ = 142443138. Its totient is φ = 142443136.

The previous prime is 142443131. The next prime is 142443149. The reversal of 142443137 is 731344241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89094721 + 53348416 = 9439^2 + 7304^2 .

It is a cyclic number.

It is not a de Polignac number, because 142443137 - 2⁴ = 142443121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142443131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71221568 + 71221569.

It is an arithmetic number, because the mean of its divisors is an integer number (71221569).

Almost surely, 2^142443137 is an apocalyptic number.

It is an amenable number.

142443137 is a deficient number, since it is larger than the sum of its proper divisors (1).

142443137 is an equidigital number, since it uses as much as digits as its factorization.

142443137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 142443137 is about 11934.9544196867. The cubic root of 142443137 is about 522.2524786269.

Adding to 142443137 its reverse (731344241), we get a palindrome (873787378).

The spelling of 142443137 in words is "one hundred forty-two million, four hundred forty-three thousand, one hundred thirty-seven".