12721485 has 16 divisors (see below), whose sum is σ = 23262336. Its totient is φ = 5815488.

The previous prime is 12721477. The next prime is 12721519. The reversal of 12721485 is 58412721.

It is not a de Polignac number, because 12721485 - 2³ = 12721477 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 60474 + ... + 60683.

It is an arithmetic number, because the mean of its divisors is an integer number (1453896).

Almost surely, 2^12721485 is an apocalyptic number.

12721485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12721485 is a deficient number, since it is larger than the sum of its proper divisors (10540851).

12721485 is a wasteful number, since it uses less digits than its factorization.

12721485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121172.

The product of its digits is 4480, while the sum is 30.

The square root of 12721485 is about 3566.7190806118. The cubic root of 12721485 is about 233.4421476596.

It can be divided in two parts, 127 and 21485, that added together give a palindrome (21612).

The spelling of 12721485 in words is "twelve million, seven hundred twenty-one thousand, four hundred eighty-five".