10243642 has 4 divisors (see below), whose sum is σ = 15365466. Its totient is φ = 5121820.

The previous prime is 10243637. The next prime is 10243657. The reversal of 10243642 is 24634201.

It is a happy number.

10243642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24634201 = 103 ⋅239167.

It can be written as a sum of positive squares in only one way, i.e., 6405961 + 3837681 = 2531^2 + 1959^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560909 + ... + 2560912.

Almost surely, 2^10243642 is an apocalyptic number.

10243642 is a deficient number, since it is larger than the sum of its proper divisors (5121824).

10243642 is an equidigital number, since it uses as much as digits as its factorization.

10243642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121823.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 10243642 is about 3200.5690119102. The cubic root of 10243642 is about 217.1791508306.

Adding to 10243642 its reverse (24634201), we get a palindrome (34877843).

The spelling of 10243642 in words is "ten million, two hundred forty-three thousand, six hundred forty-two".