16242973 has 4 divisors (see below), whose sum is σ = 17198460. Its totient is φ = 15287488.

The previous prime is 16242971. The next prime is 16242983. The reversal of 16242973 is 37924261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37924261 = 109 ⋅347929.

It can be written as a sum of positive squares in 2 ways, for example, as 12089529 + 4153444 = 3477^2 + 2038^2 .

It is not a de Polignac number, because 16242973 - 2¹ = 16242971 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 (16242971) 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, 477718 + ... + 477751.

It is an arithmetic number, because the mean of its divisors is an integer number (4299615).

Almost surely, 2^16242973 is an apocalyptic number.

It is an amenable number.

16242973 is a deficient number, since it is larger than the sum of its proper divisors (955487).

16242973 is an equidigital number, since it uses as much as digits as its factorization.

16242973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955486.

The product of its digits is 18144, while the sum is 34.

The square root of 16242973 is about 4030.2571878231. The cubic root of 16242973 is about 253.2533355827.

The spelling of 16242973 in words is "sixteen million, two hundred forty-two thousand, nine hundred seventy-three".