12902261 has 4 divisors (see below), whose sum is σ = 13035372. Its totient is φ = 12769152.

The previous prime is 12902251. The next prime is 12902317. The reversal of 12902261 is 16220921.

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 6220036 + 6682225 = 2494^2 + 2585^2 .

It is a cyclic number.

It is not a de Polignac number, because 12902261 - 2¹⁰ = 12901237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12902251) 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, 66410 + ... + 66603.

It is an arithmetic number, because the mean of its divisors is an integer number (3258843).

Almost surely, 2^12902261 is an apocalyptic number.

It is an amenable number.

12902261 is a deficient number, since it is larger than the sum of its proper divisors (133111).

12902261 is an equidigital number, since it uses as much as digits as its factorization.

12902261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133110.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 12902261 is about 3591.9717426505. The cubic root of 12902261 is about 234.5427111568.

The spelling of 12902261 in words is "twelve million, nine hundred two thousand, two hundred sixty-one".