242443240 has 64 divisors (see below), whose sum is σ = 603383760. Its totient is φ = 87091200.

The previous prime is 242443231. The next prime is 242443247. The reversal of 242443240 is 42344242.

It can be written as a sum of positive squares in 8 ways, for example, as 92968164 + 149475076 = 9642^2 + 12226^2 .

It is not an unprimeable number, because it can be changed into a prime (242443247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12940 + ... + 25540.

Almost surely, 2^242443240 is an apocalyptic number.

242443240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242443240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301691880).

242443240 is an abundant number, since it is smaller than the sum of its proper divisors (360940520).

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

242443240 is a wasteful number, since it uses less digits than its factorization.

242443240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12662 (or 12658 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 242443240 is about 15570.5889419765. The cubic root of 242443240 is about 623.5481950310.

Adding to 242443240 its reverse (42344242), we get a palindrome (284787482).

The spelling of 242443240 in words is "two hundred forty-two million, four hundred forty-three thousand, two hundred forty".