16458642 has 12 divisors (see below), whose sum is σ = 35660430. Its totient is φ = 5486208.

The previous prime is 16458641. The next prime is 16458647. The reversal of 16458642 is 24685461.

16458642 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 8 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15610401 + 848241 = 3951^2 + 921^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16458597 and 16458606.

It is not an unprimeable number, because it can be changed into a prime (16458641) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 457167 + ... + 457202.

Almost surely, 2^16458642 is an apocalyptic number.

16458642 is an abundant number, since it is smaller than the sum of its proper divisors (19201788).

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

16458642 is a wasteful number, since it uses less digits than its factorization.

16458642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914377 (or 914374 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 16458642 is about 4056.9251903381. The cubic root of 16458642 is about 254.3692832559.

The spelling of 16458642 in words is "sixteen million, four hundred fifty-eight thousand, six hundred forty-two".