12871420 has 24 divisors (see below), whose sum is σ = 27607104. Its totient is φ = 5038656.

The previous prime is 12871409. The next prime is 12871423. The reversal of 12871420 is 2417821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5907 + ... + 7786.

It is an arithmetic number, because the mean of its divisors is an integer number (1150296).

Almost surely, 2^12871420 is an apocalyptic number.

12871420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12871420 is an abundant number, since it is smaller than the sum of its proper divisors (14735684).

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

12871420 is a wasteful number, since it uses less digits than its factorization.

12871420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13749 (or 13747 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12871420 is about 3587.6761280807. The cubic root of 12871420 is about 234.3556818448.

The spelling of 12871420 in words is "twelve million, eight hundred seventy-one thousand, four hundred twenty".