142331633921 has 2 divisors, whose sum is σ = 142331633922. Its totient is φ = 142331633920.

The previous prime is 142331633909. The next prime is 142331634031. The reversal of 142331633921 is 129336133241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91303082896 + 51028551025 = 302164^2 + 225895^2 .

It is a cyclic number.

It is not a de Polignac number, because 142331633921 - 2³⁴ = 125151764737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (142331632921) 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, 71165816960 + 71165816961.

It is an arithmetic number, because the mean of its divisors is an integer number (71165816961).

Almost surely, 2^142331633921 is an apocalyptic number.

It is an amenable number.

142331633921 is a deficient number, since it is larger than the sum of its proper divisors (1).

142331633921 is an equidigital number, since it uses as much as digits as its factorization.

142331633921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 38.

The spelling of 142331633921 in words is "one hundred forty-two billion, three hundred thirty-one million, six hundred thirty-three thousand, nine hundred twenty-one".