10000642 has 4 divisors (see below), whose sum is σ = 15000966. Its totient is φ = 5000320.

The previous prime is 10000609. The next prime is 10000643. The reversal of 10000642 is 24600001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24600001 = 1609 ⋅15289.

It can be written as a sum of positive squares in only one way, i.e., 5112121 + 4888521 = 2261^2 + 2211^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10000643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500159 + ... + 2500162.

Almost surely, 2^10000642 is an apocalyptic number.

10000642 is a deficient number, since it is larger than the sum of its proper divisors (5000324).

10000642 is an equidigital number, since it uses as much as digits as its factorization.

10000642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000323.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 10000642 is about 3162.3791676521. The cubic root of 10000642 is about 215.4480793948.

Adding to 10000642 its reverse (24600001), we get a palindrome (34600643).

The spelling of 10000642 in words is "ten million, six hundred forty-two", and thus it is an aban number.