1321075 has 12 divisors (see below), whose sum is σ = 1872400. Its totient is φ = 905760.

The previous prime is 1321063. The next prime is 1321079. The reversal of 1321075 is 5701231.

It is not a de Polignac number, because 1321075 - 2⁷ = 1320947 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 3600 + ... + 3949.

2^1321075 is an apocalyptic number.

1321075 is a deficient number, since it is larger than the sum of its proper divisors (551325).

1321075 is an equidigital number, since it uses as much as digits as its factorization.

1321075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7566 (or 7561 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1321075 is about 1149.3802677965. The cubic root of 1321075 is about 109.7259015899.

The spelling of 1321075 in words is "one million, three hundred twenty-one thousand, seventy-five".