242206289 has 8 divisors (see below), whose sum is σ = 269832360. Its totient is φ = 215865216.

The previous prime is 242206219. The next prime is 242206301. The reversal of 242206289 is 982602242.

It can be written as a sum of positive squares in 4 ways, for example, as 5569600 + 236636689 = 2360^2 + 15383^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 242206289 - 2¹⁶ = 242140753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242206219) 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, 320852 + ... + 321605.

It is an arithmetic number, because the mean of its divisors is an integer number (33729045).

Almost surely, 2^242206289 is an apocalyptic number.

242206289 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

242206289 is a deficient number, since it is larger than the sum of its proper divisors (27626071).

242206289 is a wasteful number, since it uses less digits than its factorization.

242206289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642499.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 242206289 is about 15562.9781532970. The cubic root of 242206289 is about 623.3449879780.

The spelling of 242206289 in words is "two hundred forty-two million, two hundred six thousand, two hundred eighty-nine".