242221047 has 8 divisors (see below), whose sum is σ = 323036400. Its totient is φ = 161443200.

The previous prime is 242220991. The next prime is 242221051. The reversal of 242221047 is 740122242.

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

It is not a de Polignac number, because 242221047 - 2¹⁴ = 242204663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242221247) 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, 14079 + ... + 26127.

It is an arithmetic number, because the mean of its divisors is an integer number (40379550).

Almost surely, 2^242221047 is an apocalyptic number.

242221047 is a deficient number, since it is larger than the sum of its proper divisors (80815353).

242221047 is a wasteful number, since it uses less digits than its factorization.

242221047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18753.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 242221047 is about 15563.4522841174. The cubic root of 242221047 is about 623.3576481757.

Adding to 242221047 its reverse (740122242), we get a palindrome (982343289).

The spelling of 242221047 in words is "two hundred forty-two million, two hundred twenty-one thousand, forty-seven".