12450145 has 4 divisors (see below), whose sum is σ = 14940180. Its totient is φ = 9960112.

The previous prime is 12450133. The next prime is 12450173. The reversal of 12450145 is 54105421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8573184 + 3876961 = 2928^2 + 1969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12450145 is a prime.

It is a super-2 number, since 2×12450145² = 310012221042050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245010 + ... + 1245019.

It is an arithmetic number, because the mean of its divisors is an integer number (3735045).

Almost surely, 2^12450145 is an apocalyptic number.

It is an amenable number.

12450145 is a deficient number, since it is larger than the sum of its proper divisors (2490035).

12450145 is an equidigital number, since it uses as much as digits as its factorization.

12450145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490034.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 12450145 is about 3528.4763000479. The cubic root of 12450145 is about 231.7704886914.

Adding to 12450145 its reverse (54105421), we get a palindrome (66555566).

The spelling of 12450145 in words is "twelve million, four hundred fifty thousand, one hundred forty-five".