1050721 has 8 divisors (see below), whose sum is σ = 1207040. Its totient is φ = 895968.

The previous prime is 1050713. The next prime is 1050727. The reversal of 1050721 is 1270501.

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

It is a cyclic number.

It is not a de Polignac number, because 1050721 - 2³ = 1050713 is a prime.

It is a super-2 number, since 2×1050721² = 2208029239682, 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 = 1050695 and 1050704.

It is not an unprimeable number, because it can be changed into a prime (1050727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365 + ... + 2773.

It is an arithmetic number, because the mean of its divisors is an integer number (150880).

2^1050721 is an apocalyptic number.

It is an amenable number.

1050721 is a deficient number, since it is larger than the sum of its proper divisors (156319).

1050721 is an equidigital number, since it uses as much as digits as its factorization.

1050721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 1050721 is about 1025.0468281986. The cubic root of 1050721 is about 101.6628945419.

It can be divided in two parts, 1050 and 721, that added together give a palindrome (1771).

The spelling of 1050721 in words is "one million, fifty thousand, seven hundred twenty-one".