16218742 has 16 divisors (see below), whose sum is σ = 26094960. Its totient is φ = 7536672.

The previous prime is 16218733. The next prime is 16218751. The reversal of 16218742 is 24781261.

It is an interprime number because it is at equal distance from previous prime (16218733) and next prime (16218751).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 6040.

It is an arithmetic number, because the mean of its divisors is an integer number (1630935).

Almost surely, 2^16218742 is an apocalyptic number.

16218742 is the 2014-th decagonal number.

16218742 is a deficient number, since it is larger than the sum of its proper divisors (9876218).

16218742 is a wasteful number, since it uses less digits than its factorization.

16218742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8127.

The product of its digits is 5376, while the sum is 31.

The square root of 16218742 is about 4027.2499301633. The cubic root of 16218742 is about 253.1273398554.

The spelling of 16218742 in words is "sixteen million, two hundred eighteen thousand, seven hundred forty-two".