242211385 has 8 divisors (see below), whose sum is σ = 313011720. Its totient is φ = 178863744.

The previous prime is 242211383. The next prime is 242211391. The reversal of 242211385 is 583112242.

It can be written as a sum of positive squares in 4 ways, for example, as 11505664 + 230705721 = 3392^2 + 15189^2 .

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 242211385 - 2¹ = 242211383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242211383) 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, 1863100 + ... + 1863229.

It is an arithmetic number, because the mean of its divisors is an integer number (39126465).

Almost surely, 2^242211385 is an apocalyptic number.

It is an amenable number.

242211385 is a deficient number, since it is larger than the sum of its proper divisors (70800335).

242211385 is a wasteful number, since it uses less digits than its factorization.

242211385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726347.

The product of its digits is 3840, while the sum is 28.

The square root of 242211385 is about 15563.1418743132. The cubic root of 242211385 is about 623.3493596561.

The spelling of 242211385 in words is "two hundred forty-two million, two hundred eleven thousand, three hundred eighty-five".