12702145 has 16 divisors (see below), whose sum is σ = 16698960. Its totient is φ = 9232384.

The previous prime is 12702143. The next prime is 12702161. The reversal of 12702145 is 54120721.

12702145 = 221² + 222² + ... + 365².

It is a happy number.

12702145 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 8 ways, for example, as 304704 + 12397441 = 552^2 + 3521^2 .

It is a cyclic number.

It is not a de Polignac number, because 12702145 - 2¹ = 12702143 is a prime.

It is a super-2 number, since 2×12702145² = 322688975202050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12702143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112 + ... + 5041.

It is an arithmetic number, because the mean of its divisors is an integer number (1043685).

It is a Poulet number, since it divides 2^12702144-1.

Almost surely, 2^12702145 is an apocalyptic number.

It is an amenable number.

12702145 is a deficient number, since it is larger than the sum of its proper divisors (3996815).

12702145 is a wasteful number, since it uses less digits than its factorization.

12702145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5204.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12702145 is about 3564.0068742919. The cubic root of 12702145 is about 233.3237898591.

Adding to 12702145 its reverse (54120721), we get a palindrome (66822866).

The spelling of 12702145 in words is "twelve million, seven hundred two thousand, one hundred forty-five".