10002145 has 4 divisors (see below), whose sum is σ = 12002580. Its totient is φ = 8001712.

The previous prime is 10002133. The next prime is 10002149. The reversal of 10002145 is 54120001.

10002145 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: 54120001 = 13 ⋅4163077.

It can be written as a sum of positive squares in 2 ways, for example, as 2334784 + 7667361 = 1528^2 + 2769^2 .

It is a cyclic number.

It is not a de Polignac number, because 10002145 - 2⁷ = 10002017 is a prime.

10002145 is a modest number, since divided by 2145 gives 10 as remainder.

It is not an unprimeable number, because it can be changed into a prime (10002149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000210 + ... + 1000219.

It is an arithmetic number, because the mean of its divisors is an integer number (3000645).

Almost surely, 2^10002145 is an apocalyptic number.

It is an amenable number.

10002145 is a deficient number, since it is larger than the sum of its proper divisors (2000435).

10002145 is an equidigital number, since it uses as much as digits as its factorization.

10002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000434.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 10002145 is about 3162.6167962622. The cubic root of 10002145 is about 215.4588721100.

Adding to 10002145 its reverse (54120001), we get a palindrome (64122146).

The spelling of 10002145 in words is "ten million, two thousand, one hundred forty-five".