16402742 has 4 divisors (see below), whose sum is σ = 24604116. Its totient is φ = 8201370.

The previous prime is 16402733. The next prime is 16402753. The reversal of 16402742 is 24720461.

It is a semiprime because it is the product of two primes.

It is a congruent 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, 4100684 + ... + 4100687.

It is an arithmetic number, because the mean of its divisors is an integer number (6151029).

Almost surely, 2^16402742 is an apocalyptic number.

16402742 is a deficient number, since it is larger than the sum of its proper divisors (8201374).

16402742 is an equidigital number, since it uses as much as digits as its factorization.

16402742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201373.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 16402742 is about 4050.0298764330. The cubic root of 16402742 is about 254.0809773430.

The spelling of 16402742 in words is "sixteen million, four hundred two thousand, seven hundred forty-two".