16209842 has 16 divisors (see below), whose sum is σ = 27173664. Its totient is φ = 7188000.

The previous prime is 16209841. The next prime is 16209847. The reversal of 16209842 is 24890261.

It is a junction number, because it is equal to n+sod(n) for n = 16209799 and 16209808.

It is not an unprimeable number, because it can be changed into a prime (16209841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8084 + ... + 9887.

It is an arithmetic number, because the mean of its divisors is an integer number (1698354).

Almost surely, 2^16209842 is an apocalyptic number.

16209842 is a deficient number, since it is larger than the sum of its proper divisors (10963822).

16209842 is a wasteful number, since it uses less digits than its factorization.

16209842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18025.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 16209842 is about 4026.1448061390. The cubic root of 16209842 is about 253.0810303548.

The spelling of 16209842 in words is "sixteen million, two hundred nine thousand, eight hundred forty-two".