242276647 has 4 divisors (see below), whose sum is σ = 245343520. Its totient is φ = 239209776.

The previous prime is 242276627. The next prime is 242276651. The reversal of 242276647 is 746672242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746672242 = 2 ⋅373336121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242276647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242276627) 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, 1533318 + ... + 1533475.

It is an arithmetic number, because the mean of its divisors is an integer number (61335880).

Almost surely, 2^242276647 is an apocalyptic number.

242276647 is a deficient number, since it is larger than the sum of its proper divisors (3066873).

242276647 is an equidigital number, since it uses as much as digits as its factorization.

242276647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066872.

The product of its digits is 225792, while the sum is 40.

The square root of 242276647 is about 15565.2384177050. The cubic root of 242276647 is about 623.4053401966.

The spelling of 242276647 in words is "two hundred forty-two million, two hundred seventy-six thousand, six hundred forty-seven".