16197242 has 4 divisors (see below), whose sum is σ = 24295866. Its totient is φ = 8098620.

The previous prime is 16197241. The next prime is 16197263. The reversal of 16197242 is 24279161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24279161 = 271 ⋅89591.

It can be written as a sum of positive squares in only one way, i.e., 13980121 + 2217121 = 3739^2 + 1489^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16197199 and 16197208.

It is not an unprimeable number, because it can be changed into a prime (16197241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4049309 + ... + 4049312.

Almost surely, 2^16197242 is an apocalyptic number.

16197242 is a deficient number, since it is larger than the sum of its proper divisors (8098624).

16197242 is an equidigital number, since it uses as much as digits as its factorization.

16197242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8098623.

The product of its digits is 6048, while the sum is 32.

The square root of 16197242 is about 4024.5797296115. The cubic root of 16197242 is about 253.0154395948.

The spelling of 16197242 in words is "sixteen million, one hundred ninety-seven thousand, two hundred forty-two".