242244640 has 48 divisors (see below), whose sum is σ = 624335040. Its totient is φ = 88088320.

The previous prime is 242244631. The next prime is 242244641. The reversal of 242244640 is 46442242.

It is a junction number, because it is equal to n+sod(n) for n = 242244599 and 242244608.

It is not an unprimeable number, because it can be changed into a prime (242244641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67060 + ... + 70579.

It is an arithmetic number, because the mean of its divisors is an integer number (13006980).

Almost surely, 2^242244640 is an apocalyptic number.

242244640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242244640 is an abundant number, since it is smaller than the sum of its proper divisors (382090400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242244640 is a wasteful number, since it uses less digits than its factorization.

242244640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137665 (or 137657 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 242244640 is about 15564.2102273132. The cubic root of 242244640 is about 623.3778864383.

Adding to 242244640 its reverse (46442242), we get a palindrome (288686882).

The spelling of 242244640 in words is "two hundred forty-two million, two hundred forty-four thousand, six hundred forty".