12774421 has 8 divisors (see below), whose sum is σ = 14144544. Its totient is φ = 11439120.

The previous prime is 12774401. The next prime is 12774427. The reversal of 12774421 is 12447721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12774421 - 2⁵ = 12774389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12774421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12774427) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 7930 + ... + 9403.

It is an arithmetic number, because the mean of its divisors is an integer number (1768068).

Almost surely, 2^12774421 is an apocalyptic number.

12774421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12774421 is a deficient number, since it is larger than the sum of its proper divisors (1370123).

12774421 is a wasteful number, since it uses less digits than its factorization.

12774421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17411.

The product of its digits is 3136, while the sum is 28.

The square root of 12774421 is about 3574.1322023675. The cubic root of 12774421 is about 233.7654954601.

It can be divided in two parts, 127744 and 21, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 12774421 in words is "twelve million, seven hundred seventy-four thousand, four hundred twenty-one".