16409642 has 8 divisors (see below), whose sum is σ = 24891300. Its totient is φ = 8112544.

The previous prime is 16409639. The next prime is 16409677. The reversal of 16409642 is 24690461.

It is a happy number.

16409642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16072081 + 337561 = 4009^2 + 581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 16409599 and 16409608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45917 + ... + 46272.

Almost surely, 2^16409642 is an apocalyptic number.

16409642 is a deficient number, since it is larger than the sum of its proper divisors (8481658).

16409642 is an equidigital number, since it uses as much as digits as its factorization.

16409642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92280.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 16409642 is about 4050.8816324351. The cubic root of 16409642 is about 254.1165996996.

The spelling of 16409642 in words is "sixteen million, four hundred nine thousand, six hundred forty-two".