1282521 has 8 divisors (see below), whose sum is σ = 1751904. Its totient is φ = 834080.

The previous prime is 1282517. The next prime is 1282529. The reversal of 1282521 is 1252821.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1282521 - 2² = 1282517 is a prime.

1282521 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1282529) 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, 5091 + ... + 5336.

It is an arithmetic number, because the mean of its divisors is an integer number (218988).

2^1282521 is an apocalyptic number.

It is an amenable number.

1282521 is a deficient number, since it is larger than the sum of its proper divisors (469383).

1282521 is a wasteful number, since it uses less digits than its factorization.

1282521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10471.

The product of its digits is 320, while the sum is 21.

The square root of 1282521 is about 1132.4844369792. The cubic root of 1282521 is about 108.6479396553.

The spelling of 1282521 in words is "one million, two hundred eighty-two thousand, five hundred twenty-one".