10199642 has 16 divisors (see below), whose sum is σ = 15798120. Its totient is φ = 4935168.

The previous prime is 10199641. The next prime is 10199653. The reversal of 10199642 is 24699101.

10199642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10182481 + 17161 = 3191^2 + 131^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10199599 and 10199608.

It is not an unprimeable number, because it can be changed into a prime (10199641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24734 + ... + 25142.

Almost surely, 2^10199642 is an apocalyptic number.

10199642 is a deficient number, since it is larger than the sum of its proper divisors (5598478).

10199642 is a wasteful number, since it uses less digits than its factorization.

10199642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 10199642 is about 3193.6878369684. The cubic root of 10199642 is about 216.8677512547.

The spelling of 10199642 in words is "ten million, one hundred ninety-nine thousand, six hundred forty-two".