12821419 has 16 divisors (see below), whose sum is σ = 14559552. Its totient is φ = 11202048.

The previous prime is 12821411. The next prime is 12821423. The reversal of 12821419 is 91412821.

It is not a de Polignac number, because 12821419 - 2³ = 12821411 is a prime.

It is a super-2 number, since 2×12821419² = 328777570347122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12821411) 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 15 ways as a sum of consecutive naturals, for example, 40807 + ... + 41119.

It is an arithmetic number, because the mean of its divisors is an integer number (909972).

Almost surely, 2^12821419 is an apocalyptic number.

12821419 is a deficient number, since it is larger than the sum of its proper divisors (1738133).

12821419 is a wasteful number, since it uses less digits than its factorization.

12821419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486.

The product of its digits is 1152, while the sum is 28.

The square root of 12821419 is about 3580.7009090400. The cubic root of 12821419 is about 234.0518245455.

It can be divided in two parts, 1282 and 1419, that added together give a triangular number (2701 = T₇₃).

The spelling of 12821419 in words is "twelve million, eight hundred twenty-one thousand, four hundred nineteen".