242477747459809 has 9 divisors (see below), whose sum is σ = 255911729933073. Its totient is φ = 229715480460852.

The previous prime is 242477747459791. The next prime is 242477747459869. The reversal of 242477747459809 is 908954747774242.

The square root of 242477747459809 is 15571697.

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

It is not a de Polignac number, because 242477747459809 - 2¹¹ = 242477747457761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242477747459869) 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 8 ways as a sum of consecutive naturals, for example, 295452462 + ... + 296272024.

Almost surely, 2^{242477747459809} is an apocalyptic number.

242477747459809 is the 15571697-th square number.

242477747459809 is the 7785849-th centered octagonal number.

It is an amenable number.

242477747459809 is a deficient number, since it is larger than the sum of its proper divisors (13433982473264).

242477747459809 is an frugal number, since it uses more digits than its factorization.

242477747459809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639164 (or 819582 counting only the distinct ones).

The product of its (nonzero) digits is 7965941760, while the sum is 79.

The spelling of 242477747459809 in words is "two hundred forty-two trillion, four hundred seventy-seven billion, seven hundred forty-seven million, four hundred fifty-nine thousand, eight hundred nine".