156996143 has 4 divisors (see below), whose sum is σ = 161239320. Its totient is φ = 152752968.

The previous prime is 156996131. The next prime is 156996167. The reversal of 156996143 is 341699651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 156996143 - 2⁸ = 156995887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156996094 and 156996103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156996113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2121533 + ... + 2121606.

It is an arithmetic number, because the mean of its divisors is an integer number (40309830).

Almost surely, 2^156996143 is an apocalyptic number.

156996143 is a deficient number, since it is larger than the sum of its proper divisors (4243177).

156996143 is an equidigital number, since it uses as much as digits as its factorization.

156996143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243176.

The product of its digits is 174960, while the sum is 44.

The square root of 156996143 is about 12529.8101741407. The cubic root of 156996143 is about 539.4646534843.

The spelling of 156996143 in words is "one hundred fifty-six million, nine hundred ninety-six thousand, one hundred forty-three".