240143442 has 64 divisors (see below), whose sum is σ = 607315968. Its totient is φ = 61488000.

The previous prime is 240143401. The next prime is 240143473. The reversal of 240143442 is 244341042.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 29142 + ... + 36462.

It is an arithmetic number, because the mean of its divisors is an integer number (9489312).

Almost surely, 2^240143442 is an apocalyptic number.

240143442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 240143442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303657984).

240143442 is an abundant number, since it is smaller than the sum of its proper divisors (367172526).

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

240143442 is a wasteful number, since it uses less digits than its factorization.

240143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7415.

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

The square root of 240143442 is about 15496.5622639345. The cubic root of 240143442 is about 621.5702842126.

Adding to 240143442 its reverse (244341042), we get a palindrome (484484484).

The spelling of 240143442 in words is "two hundred forty million, one hundred forty-three thousand, four hundred forty-two".