1072321 has 4 divisors (see below), whose sum is σ = 1106944. Its totient is φ = 1037700.

The previous prime is 1072301. The next prime is 1072327. The reversal of 1072321 is 1232701.

It is a happy number.

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: 1232701 = 19 ⋅64879.

It is a cyclic number.

It is not a de Polignac number, because 1072321 - 2¹⁵ = 1039553 is a prime.

It is a super-2 number, since 2×1072321² = 2299744654082, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1072295 and 1072304.

It is not an unprimeable number, because it can be changed into a prime (1072327) 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, 17265 + ... + 17326.

It is an arithmetic number, because the mean of its divisors is an integer number (276736).

2^1072321 is an apocalyptic number.

It is an amenable number.

1072321 is a deficient number, since it is larger than the sum of its proper divisors (34623).

1072321 is an equidigital number, since it uses as much as digits as its factorization.

1072321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34622.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1072321 is about 1035.5293332398. The cubic root of 1072321 is about 102.3548132845.

The spelling of 1072321 in words is "one million, seventy-two thousand, three hundred twenty-one".