240143424 has 56 divisors (see below), whose sum is σ = 647395200. Its totient is φ = 78534144.

The previous prime is 240143401. The next prime is 240143473. The reversal of 240143424 is 424341042.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 240143394 and 240143403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624 + ... + 21975.

Almost surely, 2^240143424 is an apocalyptic number.

240143424 is a gapful number since it is divisible by the number (24) 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 240143424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323697600).

240143424 is an abundant number, since it is smaller than the sum of its proper divisors (407251776).

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

240143424 is a wasteful number, since it uses less digits than its factorization.

240143424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23667 (or 23657 counting only the distinct ones).

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

The square root of 240143424 is about 15496.5616831606. The cubic root of 240143424 is about 621.5702686826.

Adding to 240143424 its reverse (424341042), we get a palindrome (664484466).

The spelling of 240143424 in words is "two hundred forty million, one hundred forty-three thousand, four hundred twenty-four".