143242434 has 24 divisors (see below), whose sum is σ = 311133420. Its totient is φ = 47628288.

The previous prime is 143242403. The next prime is 143242453. The reversal of 143242434 is 434242341.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 120231225 + 23011209 = 10965^2 + 4797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143242398 and 143242407.

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 11 ways as a sum of consecutive naturals, for example, 2367 + ... + 17090.

Almost surely, 2^143242434 is an apocalyptic number.

143242434 is an abundant number, since it is smaller than the sum of its proper divisors (167890986).

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

143242434 is a wasteful number, since it uses less digits than its factorization.

143242434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19874 (or 19871 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 143242434 is about 11968.3931252278. The cubic root of 143242434 is about 523.2275027276.

Adding to 143242434 its reverse (434242341), we get a palindrome (577484775).

The spelling of 143242434 in words is "one hundred forty-three million, two hundred forty-two thousand, four hundred thirty-four".