143242340 has 48 divisors (see below), whose sum is σ = 319488624. Its totient is φ = 53760000.

The previous prime is 143242301. The next prime is 143242369. The reversal of 143242340 is 43242341.

It can be written as a sum of positive squares in 8 ways, for example, as 29008996 + 114233344 = 5386^2 + 10688^2 .

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 15 ways as a sum of consecutive naturals, for example, 203990 + ... + 204690.

It is an arithmetic number, because the mean of its divisors is an integer number (6656013).

Almost surely, 2^143242340 is an apocalyptic number.

143242340 is a gapful number since it is divisible by the number (10) 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 143242340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159744312).

143242340 is an abundant number, since it is smaller than the sum of its proper divisors (176246284).

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

143242340 is a wasteful number, since it uses less digits than its factorization.

143242340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1326 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 143242340 is about 11968.3891982171. The cubic root of 143242340 is about 523.2273882750.

Adding to 143242340 its reverse (43242341), we get a palindrome (186484681).

Subtracting from 143242340 its reverse (43242341), we obtain a palindrome (99999999).

The spelling of 143242340 in words is "one hundred forty-three million, two hundred forty-two thousand, three hundred forty".