16143427 has 2 divisors, whose sum is σ = 16143428. Its totient is φ = 16143426.

The previous prime is 16143397. The next prime is 16143431. The reversal of 16143427 is 72434161.

16143427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16143427 is a prime.

It is a super-2 number, since 2×16143427² = 521220470608658, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 16143395 and 16143404.

It is not a weakly prime, because it can be changed into another prime (16143437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8071713 + 8071714.

It is an arithmetic number, because the mean of its divisors is an integer number (8071714).

Almost surely, 2^16143427 is an apocalyptic number.

16143427 is a deficient number, since it is larger than the sum of its proper divisors (1).

16143427 is an equidigital number, since it uses as much as digits as its factorization.

16143427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 16143427 is about 4017.8883757516. Note that the first 3 decimals coincide. The cubic root of 16143427 is about 252.7349158399.

Adding to 16143427 its reverse (72434161), we get a palindrome (88577588).

It can be divided in two parts, 1614 and 3427, that added together give a square (5041 = 71²).

The spelling of 16143427 in words is "sixteen million, one hundred forty-three thousand, four hundred twenty-seven".