16611042 has 32 divisors (see below), whose sum is σ = 38541312. Its totient is φ = 4674384.

The previous prime is 16611041. The next prime is 16611053. The reversal of 16611042 is 24011661.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (16611041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138 + ... + 5765.

It is an arithmetic number, because the mean of its divisors is an integer number (1204416).

Almost surely, 2^16611042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16611042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19270656).

16611042 is an abundant number, since it is smaller than the sum of its proper divisors (21930270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16611042 is a wasteful number, since it uses less digits than its factorization.

16611042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 16611042 is about 4075.6646083798. The cubic root of 16611042 is about 255.1519893600.

The spelling of 16611042 in words is "sixteen million, six hundred eleven thousand, forty-two".