16706042 has 4 divisors (see below), whose sum is σ = 25059066. Its totient is φ = 8353020.

The previous prime is 16706003. The next prime is 16706047. The reversal of 16706042 is 24060761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24060761 = 139 ⋅173099.

It can be written as a sum of positive squares in only one way, i.e., 9247681 + 7458361 = 3041^2 + 2731^2 .

It is not an unprimeable number, because it can be changed into a prime (16706047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4176509 + ... + 4176512.

Almost surely, 2^16706042 is an apocalyptic number.

16706042 is a deficient number, since it is larger than the sum of its proper divisors (8353024).

16706042 is an equidigital number, since it uses as much as digits as its factorization.

16706042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8353023.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16706042 is about 4087.3025334565. The cubic root of 16706042 is about 255.6374771878.

The spelling of 16706042 in words is "sixteen million, seven hundred six thousand, forty-two".