12921414 has 64 divisors (see below), whose sum is σ = 30032640. Its totient is φ = 3669120.

The previous prime is 12921407. The next prime is 12921449. The reversal of 12921414 is 41412921.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82224 + ... + 82380.

It is an arithmetic number, because the mean of its divisors is an integer number (469260).

Almost surely, 2^12921414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12921414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15016320).

12921414 is an abundant number, since it is smaller than the sum of its proper divisors (17111226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12921414 is a wasteful number, since it uses less digits than its factorization.

12921414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

The product of its digits is 576, while the sum is 24.

The square root of 12921414 is about 3594.6368384025. The cubic root of 12921414 is about 234.6587108651.

The spelling of 12921414 in words is "twelve million, nine hundred twenty-one thousand, four hundred fourteen".