242704219 has 4 divisors (see below), whose sum is σ = 251073360. Its totient is φ = 234335080.

The previous prime is 242704213. The next prime is 242704247. The reversal of 242704219 is 912407242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912407242 = 2 ⋅456203621.

It is not a de Polignac number, because 242704219 - 2²¹ = 240607067 is a prime.

It is a super-2 number, since 2×242704219² = 117810675840799922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242704213) 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, 4184527 + ... + 4184584.

It is an arithmetic number, because the mean of its divisors is an integer number (62768340).

Almost surely, 2^242704219 is an apocalyptic number.

242704219 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

242704219 is a deficient number, since it is larger than the sum of its proper divisors (8369141).

242704219 is an equidigital number, since it uses as much as digits as its factorization.

242704219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8369140.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 242704219 is about 15578.9671994006. The cubic root of 242704219 is about 623.7718551170.

The spelling of 242704219 in words is "two hundred forty-two million, seven hundred four thousand, two hundred nineteen".