12837145 has 8 divisors (see below), whose sum is σ = 15657480. Its totient is φ = 10101120.

The previous prime is 12837107. The next prime is 12837191. The reversal of 12837145 is 54173821.

12837145 is digitally balanced in base 3, 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 1708249 + 11128896 = 1307^2 + 3336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12837145 - 2⁷ = 12837017 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20740 + ... + 21349.

It is an arithmetic number, because the mean of its divisors is an integer number (1957185).

Almost surely, 2^12837145 is an apocalyptic number.

It is an amenable number.

12837145 is a deficient number, since it is larger than the sum of its proper divisors (2820335).

12837145 is an equidigital number, since it uses as much as digits as its factorization.

12837145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42155.

The product of its digits is 6720, while the sum is 31.

The square root of 12837145 is about 3582.8961748842. The cubic root of 12837145 is about 234.1474768591.

It can be divided in two parts, 128 and 37145, that added together give a palindrome (37273).

The spelling of 12837145 in words is "twelve million, eight hundred thirty-seven thousand, one hundred forty-five".