16354642 has 4 divisors (see below), whose sum is σ = 24531966. Its totient is φ = 8177320.

The previous prime is 16354619. The next prime is 16354661. The reversal of 16354642 is 24645361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24645361 = 13 ⋅1895797.

It can be written as a sum of positive squares in only one way, i.e., 16232841 + 121801 = 4029^2 + 349^2 .

It is a super-3 number, since 3×16354642³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4088659 + ... + 4088662.

Almost surely, 2^16354642 is an apocalyptic number.

16354642 is a deficient number, since it is larger than the sum of its proper divisors (8177324).

16354642 is an equidigital number, since it uses as much as digits as its factorization.

16354642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8177323.

The product of its digits is 17280, while the sum is 31.

The square root of 16354642 is about 4044.0872888700. The cubic root of 16354642 is about 253.8323754006.

The spelling of 16354642 in words is "sixteen million, three hundred fifty-four thousand, six hundred forty-two".