242205644 has 6 divisors (see below), whose sum is σ = 423859884. Its totient is φ = 121102820.

The previous prime is 242205643. The next prime is 242205781. The reversal of 242205644 is 446502242.

It is not an unprimeable number, because it can be changed into a prime (242205641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30275702 + ... + 30275709.

It is an arithmetic number, because the mean of its divisors is an integer number (70643314).

Almost surely, 2^242205644 is an apocalyptic number.

It is an amenable number.

242205644 is a deficient number, since it is larger than the sum of its proper divisors (181654240).

242205644 is a wasteful number, since it uses less digits than its factorization.

242205644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60551415 (or 60551413 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 242205644 is about 15562.9574310283. The cubic root of 242205644 is about 623.3444346509.

Adding to 242205644 its reverse (446502242), we get a palindrome (688707886).

The spelling of 242205644 in words is "two hundred forty-two million, two hundred five thousand, six hundred forty-four".