142330561 has 2 divisors, whose sum is σ = 142330562. Its totient is φ = 142330560.

The previous prime is 142330553. The next prime is 142330567. The reversal of 142330561 is 165033241.

142330561 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., 107744400 + 34586161 = 10380^2 + 5881^2 .

It is a cyclic number.

It is not a de Polignac number, because 142330561 - 2³ = 142330553 is a prime.

It is not a weakly prime, because it can be changed into another prime (142330567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71165280 + 71165281.

It is an arithmetic number, because the mean of its divisors is an integer number (71165281).

Almost surely, 2^142330561 is an apocalyptic number.

It is an amenable number.

142330561 is a deficient number, since it is larger than the sum of its proper divisors (1).

142330561 is an equidigital number, since it uses as much as digits as its factorization.

142330561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 142330561 is about 11930.2372566517. The cubic root of 142330561 is about 522.1148597577.

The spelling of 142330561 in words is "one hundred forty-two million, three hundred thirty thousand, five hundred sixty-one".