722143843 has 4 divisors (see below), whose sum is σ = 723017880. Its totient is φ = 721269808.

The previous prime is 722143831. The next prime is 722143859. The reversal of 722143843 is 348341227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348341227 = 13 ⋅26795479.

It is a cyclic number.

It is not a de Polignac number, because 722143843 - 2²⁹ = 185272931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722143799 and 722143808.

It is not an unprimeable number, because it can be changed into a prime (722143823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435778 + ... + 437431.

It is an arithmetic number, because the mean of its divisors is an integer number (180754470).

Almost surely, 2^722143843 is an apocalyptic number.

722143843 is a deficient number, since it is larger than the sum of its proper divisors (874037).

722143843 is an equidigital number, since it uses as much as digits as its factorization.

722143843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874036.

The product of its digits is 32256, while the sum is 34.

The square root of 722143843 is about 26872.7341928580. The cubic root of 722143843 is about 897.1696445313.

The spelling of 722143843 in words is "seven hundred twenty-two million, one hundred forty-three thousand, eight hundred forty-three".