142767811909 has 2 divisors, whose sum is σ = 142767811910. Its totient is φ = 142767811908.

The previous prime is 142767811807. The next prime is 142767811937. The reversal of 142767811909 is 909118767241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126326930625 + 16440881284 = 355425^2 + 128222^2 .

It is a cyclic number.

It is not a de Polignac number, because 142767811909 - 2¹¹ = 142767809861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142767811909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142767811999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71383905954 + 71383905955.

It is an arithmetic number, because the mean of its divisors is an integer number (71383905955).

Almost surely, 2^142767811909 is an apocalyptic number.

It is an amenable number.

142767811909 is a deficient number, since it is larger than the sum of its proper divisors (1).

142767811909 is an equidigital number, since it uses as much as digits as its factorization.

142767811909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 55.

The spelling of 142767811909 in words is "one hundred forty-two billion, seven hundred sixty-seven million, eight hundred eleven thousand, nine hundred nine".