299142269721 has 63 divisors (see below), whose sum is σ = 459319697893. Its totient is φ = 194732161560.

The previous prime is 299142269689. The next prime is 299142269759. The reversal of 299142269721 is 127962241992.

It is a happy number.

The square root of 299142269721 is 546939.

It is a perfect power (a square), and thus also a powerful number.

299142269721 is a `hidden beast` number, since 2 + 9 + 91 + 422 + 69 + 72 + 1 = 666.

It is not a de Polignac number, because 299142269721 - 2⁵ = 299142269689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (299142269521) 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 in 62 ways as a sum of consecutive naturals, for example, 694065376 + ... + 694065806.

Almost surely, 2^299142269721 is an apocalyptic number.

299142269721 is the 546939-th square number.

299142269721 is the 273470-th centered octagonal number.

It is an amenable number.

299142269721 is a deficient number, since it is larger than the sum of its proper divisors (160177428172).

299142269721 is an frugal number, since it uses more digits than its factorization.

299142269721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 481 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The spelling of 299142269721 in words is "two hundred ninety-nine billion, one hundred forty-two million, two hundred sixty-nine thousand, seven hundred twenty-one".