142243061 has 2 divisors, whose sum is σ = 142243062. Its totient is φ = 142243060.

The previous prime is 142243051. The next prime is 142243081. The reversal of 142243061 is 160342241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81558961 + 60684100 = 9031^2 + 7790^2 .

It is a cyclic number.

It is not a de Polignac number, because 142243061 - 2¹⁴ = 142226677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142243051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121530 + 71121531.

It is an arithmetic number, because the mean of its divisors is an integer number (71121531).

Almost surely, 2^142243061 is an apocalyptic number.

It is an amenable number.

142243061 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243061 is an equidigital number, since it uses as much as digits as its factorization.

142243061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 142243061 is about 11926.5695403163. The cubic root of 142243061 is about 522.0078449910.

The spelling of 142243061 in words is "one hundred forty-two million, two hundred forty-three thousand, sixty-one".