143942083609 has 3 divisors (see below), whose sum is σ = 143942463007. Its totient is φ = 143941704212.

The previous prime is 143942083583. The next prime is 143942083619. The reversal of 143942083609 is 906380249341.

The square root of 143942083609 is 379397.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 140321414025 + 3620669584 = 374595^2 + 60172^2 .

It is not a de Polignac number, because 143942083609 - 2⁵ = 143942083577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143942083619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 189699 + ... + 569095.

Almost surely, 2^143942083609 is an apocalyptic number.

143942083609 is the 379397-th square number.

143942083609 is the 189699-th centered octagonal number.

It is an amenable number.

143942083609 is a deficient number, since it is larger than the sum of its proper divisors (379398).

143942083609 is an frugal number, since it uses more digits than its factorization.

143942083609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758794 (or 379397 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

Multiplying 143942083609 by its sum of digits (49), we get a square (7053162096841 = 2655779²).

The spelling of 143942083609 in words is "one hundred forty-three billion, nine hundred forty-two million, eighty-three thousand, six hundred nine".