16490042 has 8 divisors (see below), whose sum is σ = 24806196. Its totient is φ = 8221312.

The previous prime is 16490039. The next prime is 16490053. The reversal of 16490042 is 24009461.

It can be written as a sum of positive squares in 2 ways, for example, as 16248961 + 241081 = 4031^2 + 491^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 16489993 and 16490020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10973 + ... + 12384.

Almost surely, 2^16490042 is an apocalyptic number.

16490042 is a deficient number, since it is larger than the sum of its proper divisors (8316154).

16490042 is a wasteful number, since it uses less digits than its factorization.

16490042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23712.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16490042 is about 4060.7932722561. The cubic root of 16490042 is about 254.5309434446.

The spelling of 16490042 in words is "sixteen million, four hundred ninety thousand, forty-two".