142696286921 has 2 divisors, whose sum is σ = 142696286922. Its totient is φ = 142696286920.

The previous prime is 142696286903. The next prime is 142696286933. The reversal of 142696286921 is 129682696241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104434970896 + 38261316025 = 323164^2 + 195605^2 .

It is a cyclic number.

It is not a de Polignac number, because 142696286921 - 2¹⁸ = 142696024777 is a prime.

It is not a weakly prime, because it can be changed into another prime (142696286521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71348143460 + 71348143461.

It is an arithmetic number, because the mean of its divisors is an integer number (71348143461).

Almost surely, 2^142696286921 is an apocalyptic number.

It is an amenable number.

142696286921 is a deficient number, since it is larger than the sum of its proper divisors (1).

142696286921 is an equidigital number, since it uses as much as digits as its factorization.

142696286921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 56.

The spelling of 142696286921 in words is "one hundred forty-two billion, six hundred ninety-six million, two hundred eighty-six thousand, nine hundred twenty-one".