12902345 has 4 divisors (see below), whose sum is σ = 15482820. Its totient is φ = 10321872.

The previous prime is 12902339. The next prime is 12902347. The reversal of 12902345 is 54320921.

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 7557001 + 5345344 = 2749^2 + 2312^2 .

It is a cyclic number.

It is not a de Polignac number, because 12902345 - 2¹⁶ = 12836809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12902347) 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, 1290230 + ... + 1290239.

It is an arithmetic number, because the mean of its divisors is an integer number (3870705).

Almost surely, 2^12902345 is an apocalyptic number.

It is an amenable number.

12902345 is a deficient number, since it is larger than the sum of its proper divisors (2580475).

12902345 is an equidigital number, since it uses as much as digits as its factorization.

12902345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580474.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 12902345 is about 3591.9834353738. The cubic root of 12902345 is about 234.5432201514.

The spelling of 12902345 in words is "twelve million, nine hundred two thousand, three hundred forty-five".