16431242 has 8 divisors (see below), whose sum is σ = 25248132. Its totient is φ = 8015200.

The previous prime is 16431227. The next prime is 16431251. The reversal of 16431242 is 24213461.

It can be written as a sum of positive squares in 2 ways, for example, as 11282881 + 5148361 = 3359^2 + 2269^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100109 + ... + 100272.

Almost surely, 2^16431242 is an apocalyptic number.

16431242 is a deficient number, since it is larger than the sum of its proper divisors (8816890).

16431242 is a wasteful number, since it uses less digits than its factorization.

16431242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200424.

The product of its digits is 1152, while the sum is 23.

The square root of 16431242 is about 4053.5468419645. The cubic root of 16431242 is about 254.2280486465.

The spelling of 16431242 in words is "sixteen million, four hundred thirty-one thousand, two hundred forty-two".