1321071 has 8 divisors (see below), whose sum is σ = 1770624. Its totient is φ = 876120.

The previous prime is 1321063. The next prime is 1321079. The reversal of 1321071 is 1701231.

It is an interprime number because it is at equal distance from previous prime (1321063) and next prime (1321079).

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

It is not a de Polignac number, because 1321071 - 2³ = 1321063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321071.

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 7 ways as a sum of consecutive naturals, for example, 411 + ... + 1676.

It is an arithmetic number, because the mean of its divisors is an integer number (221328).

2^1321071 is an apocalyptic number.

1321071 is a deficient number, since it is larger than the sum of its proper divisors (449553).

1321071 is a wasteful number, since it uses less digits than its factorization.

1321071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1321071 is about 1149.3785277270. The cubic root of 1321071 is about 109.7257908457.

The spelling of 1321071 in words is "one million, three hundred twenty-one thousand, seventy-one".