722143427 has 2 divisors, whose sum is σ = 722143428. Its totient is φ = 722143426.

The previous prime is 722143417. The next prime is 722143547. The reversal of 722143427 is 724341227.

It is a weak prime.

It is an emirp because it is prime and its reverse (724341227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 722143427 - 2¹⁶ = 722077891 is a prime.

It is a super-2 number, since 2×722143427² = 1042982258318608658, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 722143393 and 722143402.

It is not a weakly prime, because it can be changed into another prime (722143417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361071713 + 361071714.

It is an arithmetic number, because the mean of its divisors is an integer number (361071714).

Almost surely, 2^722143427 is an apocalyptic number.

722143427 is a deficient number, since it is larger than the sum of its proper divisors (1).

722143427 is an equidigital number, since it uses as much as digits as its factorization.

722143427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 32.

The square root of 722143427 is about 26872.7264526694. The cubic root of 722143427 is about 897.1694722560.

The spelling of 722143427 in words is "seven hundred twenty-two million, one hundred forty-three thousand, four hundred twenty-seven".