12902465 has 4 divisors (see below), whose sum is σ = 15482964. Its totient is φ = 10321968.

The previous prime is 12902437. The next prime is 12902489. The reversal of 12902465 is 56420921.

It is a happy number.

It is a Cunningham number, because it is equal to 3592²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56420921 = 29 ⋅1945549.

It can be written as a sum of positive squares in 2 ways, for example, as 4648336 + 8254129 = 2156^2 + 2873^2 .

It is a cyclic number.

It is not a de Polignac number, because 12902465 - 2⁶ = 12902401 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 1290242 + ... + 1290251.

It is an arithmetic number, because the mean of its divisors is an integer number (3870741).

Almost surely, 2^12902465 is an apocalyptic number.

It is an amenable number.

12902465 is a deficient number, since it is larger than the sum of its proper divisors (2580499).

12902465 is an equidigital number, since it uses as much as digits as its factorization.

12902465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580498.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 12902465 is about 3592.0001391982. Note that the first 3 decimals coincide. The cubic root of 12902465 is about 234.5439472828.

It can be divided in two parts, 129024 and 65, that multiplied together give a triangular number (8386560 = T₄₀₉₅).

The spelling of 12902465 in words is "twelve million, nine hundred two thousand, four hundred sixty-five".