1032721 has 2 divisors, whose sum is σ = 1032722. Its totient is φ = 1032720.

The previous prime is 1032709. The next prime is 1032727. The reversal of 1032721 is 1272301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 746496 + 286225 = 864^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1032721 - 2¹⁵ = 999953 is a prime.

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

1032721 is a lucky number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1032695 and 1032704.

It is not a weakly prime, because it can be changed into another prime (1032727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 516360 + 516361.

It is an arithmetic number, because the mean of its divisors is an integer number (516361).

2^1032721 is an apocalyptic number.

It is an amenable number.

1032721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1032721 is an equidigital number, since it uses as much as digits as its factorization.

1032721 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1032721 is about 1016.2288128173. The cubic root of 1032721 is about 101.0790153824.

The spelling of 1032721 in words is "one million, thirty-two thousand, seven hundred twenty-one".