12780254 has 4 divisors (see below), whose sum is σ = 19170384. Its totient is φ = 6390126.

The previous prime is 12780247. The next prime is 12780263. The reversal of 12780254 is 45208721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45208721 = 977 ⋅46273.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3195062 + ... + 3195065.

It is an arithmetic number, because the mean of its divisors is an integer number (4792596).

Almost surely, 2^12780254 is an apocalyptic number.

12780254 is a deficient number, since it is larger than the sum of its proper divisors (6390130).

12780254 is an equidigital number, since it uses as much as digits as its factorization.

12780254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6390129.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 12780254 is about 3574.9481115116. The cubic root of 12780254 is about 233.8010703705.

Adding to 12780254 its reverse (45208721), we get a palindrome (57988975).

The spelling of 12780254 in words is "twelve million, seven hundred eighty thousand, two hundred fifty-four".