2156124143 has 4 divisors (see below), whose sum is σ = 2192668680. Its totient is φ = 2119579608.

The previous prime is 2156124133. The next prime is 2156124209. The reversal of 2156124143 is 3414216512.

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 2156124143 - 2⁸ = 2156123887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156124133) 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 3 ways as a sum of consecutive naturals, for example, 18272180 + ... + 18272297.

It is an arithmetic number, because the mean of its divisors is an integer number (548167170).

Almost surely, 2^2156124143 is an apocalyptic number.

2156124143 is a deficient number, since it is larger than the sum of its proper divisors (36544537).

2156124143 is an equidigital number, since it uses as much as digits as its factorization.

2156124143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36544536.

The product of its digits is 5760, while the sum is 29.

The square root of 2156124143 is about 46434.0838501203. The cubic root of 2156124143 is about 1291.8871769562.

The spelling of 2156124143 in words is "two billion, one hundred fifty-six million, one hundred twenty-four thousand, one hundred forty-three".