142330021261 has 2 divisors, whose sum is σ = 142330021262. Its totient is φ = 142330021260.

The previous prime is 142330021189. The next prime is 142330021303. The reversal of 142330021261 is 162120033241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80630442025 + 61699579236 = 283955^2 + 248394^2 .

It is a cyclic number.

It is not a de Polignac number, because 142330021261 - 2³⁷ = 4891067789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142330091261) 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, 71165010630 + 71165010631.

It is an arithmetic number, because the mean of its divisors is an integer number (71165010631).

Almost surely, 2^142330021261 is an apocalyptic number.

It is an amenable number.

142330021261 is a deficient number, since it is larger than the sum of its proper divisors (1).

142330021261 is an equidigital number, since it uses as much as digits as its factorization.

142330021261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 142330021261 in words is "one hundred forty-two billion, three hundred thirty million, twenty-one thousand, two hundred sixty-one".