16420243 has 6 divisors (see below), whose sum is σ = 19101156. Its totient is φ = 14074452.

The previous prime is 16420223. The next prime is 16420253. The reversal of 16420243 is 34202461.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-16420243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16420223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167505 + ... + 167602.

It is an arithmetic number, because the mean of its divisors is an integer number (3183526).

Almost surely, 2^16420243 is an apocalyptic number.

16420243 is a deficient number, since it is larger than the sum of its proper divisors (2680913).

16420243 is an equidigital number, since it uses as much as digits as its factorization.

16420243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335121 (or 335114 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 16420243 is about 4052.1899017692. The cubic root of 16420243 is about 254.1713096109.

The spelling of 16420243 in words is "sixteen million, four hundred twenty thousand, two hundred forty-three".