16720127 has 4 divisors (see below), whose sum is σ = 16745016. Its totient is φ = 16695240.

The previous prime is 16720117. The next prime is 16720157. The reversal of 16720127 is 72102761.

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 16720127 - 2⁴ = 16720111 is a prime.

It is a super-2 number, since 2×16720127² = 559125293792258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16720096 and 16720105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720117) 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, 11408 + ... + 12789.

It is an arithmetic number, because the mean of its divisors is an integer number (4186254).

Almost surely, 2^16720127 is an apocalyptic number.

16720127 is a deficient number, since it is larger than the sum of its proper divisors (24889).

16720127 is an equidigital number, since it uses as much as digits as its factorization.

16720127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24888.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 16720127 is about 4089.0251894553. The cubic root of 16720127 is about 255.7093003527.

Adding to 16720127 its reverse (72102761), we get a palindrome (88822888).

The spelling of 16720127 in words is "sixteen million, seven hundred twenty thousand, one hundred twenty-seven".