242211405 has 8 divisors (see below), whose sum is σ = 387538272. Its totient is φ = 129179408.

The previous prime is 242211391. The next prime is 242211421. The reversal of 242211405 is 504112242.

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 242211405 - 2⁶ = 242211341 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8073699 + ... + 8073728.

It is an arithmetic number, because the mean of its divisors is an integer number (48442284).

Almost surely, 2^242211405 is an apocalyptic number.

It is an amenable number.

242211405 is a deficient number, since it is larger than the sum of its proper divisors (145326867).

242211405 is a wasteful number, since it uses less digits than its factorization.

242211405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16147435.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 242211405 is about 15563.1425168569. The cubic root of 242211405 is about 623.3493768132.

Adding to 242211405 its reverse (504112242), we get a palindrome (746323647).

The spelling of 242211405 in words is "two hundred forty-two million, two hundred eleven thousand, four hundred five".