242550261 has 8 divisors (see below), whose sum is σ = 359333760. Its totient is φ = 161700156.

The previous prime is 242550227. The next prime is 242550263. The reversal of 242550261 is 162055242.

It is not a de Polignac number, because 242550261 - 2¹¹ = 242548213 is a prime.

It is a super-3 number, since 3×242550261³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 8983343 = 242550261 / (2 + 4 + 2 + 5 + 5 + 0 + 2 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242550263) 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, 4491645 + ... + 4491698.

It is an arithmetic number, because the mean of its divisors is an integer number (44916720).

Almost surely, 2^242550261 is an apocalyptic number.

It is an amenable number.

242550261 is a deficient number, since it is larger than the sum of its proper divisors (116783499).

242550261 is an equidigital number, since it uses as much as digits as its factorization.

242550261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8983352 (or 8983346 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 242550261 is about 15574.0252022398. The cubic root of 242550261 is about 623.6399318770.

The spelling of 242550261 in words is "two hundred forty-two million, five hundred fifty thousand, two hundred sixty-one".