242143440 has 160 divisors (see below), whose sum is σ = 935940096. Its totient is φ = 50311680.

The previous prime is 242143411. The next prime is 242143459. The reversal of 242143440 is 44341242.

It is a happy number.

242143440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 242143440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11929 + ... + 25031.

Almost surely, 2^242143440 is an apocalyptic number.

242143440 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 242143440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467970048).

242143440 is an abundant number, since it is smaller than the sum of its proper divisors (693796656).

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

242143440 is a wasteful number, since it uses less digits than its factorization.

242143440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13137 (or 13131 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 242143440 is about 15560.9588393518. The cubic root of 242143440 is about 623.2910670023.

Adding to 242143440 its reverse (44341242), we get a palindrome (286484682).

The spelling of 242143440 in words is "two hundred forty-two million, one hundred forty-three thousand, four hundred forty".