16420111 has 4 divisors (see below), whose sum is σ = 16949824. Its totient is φ = 15890400.

The previous prime is 16420093. The next prime is 16420121. The reversal of 16420111 is 11102461.

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 16420111 - 2¹¹ = 16418063 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 (16420121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264810 + ... + 264871.

It is an arithmetic number, because the mean of its divisors is an integer number (4237456).

Almost surely, 2^16420111 is an apocalyptic number.

16420111 is a deficient number, since it is larger than the sum of its proper divisors (529713).

16420111 is an equidigital number, since it uses as much as digits as its factorization.

16420111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529712.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 16420111 is about 4052.1736142471. The cubic root of 16420111 is about 254.1706285267.

Adding to 16420111 its reverse (11102461), we get a palindrome (27522572).

The spelling of 16420111 in words is "sixteen million, four hundred twenty thousand, one hundred eleven".