242761947 has 4 divisors (see below), whose sum is σ = 323682600. Its totient is φ = 161841296.

The previous prime is 242761919. The next prime is 242761973. The reversal of 242761947 is 749167242.

242761947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 242761947 - 2¹⁹ = 242237659 is a prime.

It is a super-3 number, since 3×242761947³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 242761899 and 242761908.

It is not an unprimeable number, because it can be changed into a prime (242761907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40460322 + ... + 40460327.

It is an arithmetic number, because the mean of its divisors is an integer number (80920650).

Almost surely, 2^242761947 is an apocalyptic number.

242761947 is a deficient number, since it is larger than the sum of its proper divisors (80920653).

242761947 is an equidigital number, since it uses as much as digits as its factorization.

242761947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80920652.

The product of its digits is 169344, while the sum is 42.

The square root of 242761947 is about 15580.8198436411. The cubic root of 242761947 is about 623.8213065950.

The spelling of 242761947 in words is "two hundred forty-two million, seven hundred sixty-one thousand, nine hundred forty-seven".