242894217 has 8 divisors (see below), whose sum is σ = 325648960. Its totient is φ = 161034480.

The previous prime is 242894213. The next prime is 242894219. The reversal of 242894217 is 712498242.

It is a happy number.

242894217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242894217 - 2² = 242894213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242894213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223117 + ... + 224202.

It is an arithmetic number, because the mean of its divisors is an integer number (40706120).

Almost surely, 2^242894217 is an apocalyptic number.

It is an amenable number.

242894217 is a deficient number, since it is larger than the sum of its proper divisors (82754743).

242894217 is a wasteful number, since it uses less digits than its factorization.

242894217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447503.

The product of its digits is 64512, while the sum is 39.

The square root of 242894217 is about 15585.0639074724. The cubic root of 242894217 is about 623.9345833585.

The spelling of 242894217 in words is "two hundred forty-two million, eight hundred ninety-four thousand, two hundred seventeen".