142127813 has 2 divisors, whose sum is σ = 142127814. Its totient is φ = 142127812.

The previous prime is 142127761. The next prime is 142127831. The reversal of 142127813 is 318721241.

Together with next prime (142127831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106151809 + 35976004 = 10303^2 + 5998^2 .

It is a cyclic number.

It is not a de Polignac number, because 142127813 - 2²⁴ = 125350597 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (142127863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71063906 + 71063907.

It is an arithmetic number, because the mean of its divisors is an integer number (71063907).

Almost surely, 2^142127813 is an apocalyptic number.

It is an amenable number.

142127813 is a deficient number, since it is larger than the sum of its proper divisors (1).

142127813 is an equidigital number, since it uses as much as digits as its factorization.

142127813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 142127813 is about 11921.7369959247. The cubic root of 142127813 is about 521.8668267117.

The spelling of 142127813 in words is "one hundred forty-two million, one hundred twenty-seven thousand, eight hundred thirteen".