143440242 has 16 divisors (see below), whose sum is σ = 312960672. Its totient is φ = 43466720.

The previous prime is 143440229. The next prime is 143440243. The reversal of 143440242 is 242044341.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (143440243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1086603 + ... + 1086734.

It is an arithmetic number, because the mean of its divisors is an integer number (19560042).

Almost surely, 2^143440242 is an apocalyptic number.

143440242 is an abundant number, since it is smaller than the sum of its proper divisors (169520430).

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

143440242 is a wasteful number, since it uses less digits than its factorization.

143440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173353.

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

The square root of 143440242 is about 11976.6540402568. The cubic root of 143440242 is about 523.4682390746.

Adding to 143440242 its reverse (242044341), we get a palindrome (385484583).

The spelling of 143440242 in words is "one hundred forty-three million, four hundred forty thousand, two hundred forty-two".