143789138 has 8 divisors (see below), whose sum is σ = 216324732. Its totient is φ = 71680896.

The previous prime is 143789101. The next prime is 143789147. The reversal of 143789138 is 831987341.

It can be written as a sum of positive squares in 2 ways, for example, as 128210329 + 15578809 = 11323^2 + 3947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105995 + ... + 107342.

Almost surely, 2^143789138 is an apocalyptic number.

143789138 is a deficient number, since it is larger than the sum of its proper divisors (72535594).

143789138 is a wasteful number, since it uses less digits than its factorization.

143789138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213676.

The product of its digits is 145152, while the sum is 44.

The square root of 143789138 is about 11991.2108646291. The cubic root of 143789138 is about 523.8923136907.

The spelling of 143789138 in words is "one hundred forty-three million, seven hundred eighty-nine thousand, one hundred thirty-eight".