1321049 has 4 divisors (see below), whose sum is σ = 1326336. Its totient is φ = 1315764.

The previous prime is 1321031. The next prime is 1321063. The reversal of 1321049 is 9401231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9401231 = 7 ⋅1343033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321049.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249 + ... + 2774.

It is an arithmetic number, because the mean of its divisors is an integer number (331584).

2^1321049 is an apocalyptic number.

It is an amenable number.

1321049 is a deficient number, since it is larger than the sum of its proper divisors (5287).

1321049 is an equidigital number, since it uses as much as digits as its factorization.

1321049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1321049 is about 1149.3689572979. The cubic root of 1321049 is about 109.7251817488.

The spelling of 1321049 in words is "one million, three hundred twenty-one thousand, forty-nine".