940721 has 2 divisors, whose sum is σ = 940722. Its totient is φ = 940720.

The previous prime is 940703. The next prime is 940727. The reversal of 940721 is 127049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 57121 = 940^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 940721 - 2¹⁴ = 924337 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 940721.

It is not a weakly prime, because it can be changed into another prime (940727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470360 + 470361.

It is an arithmetic number, because the mean of its divisors is an integer number (470361).

2⁹⁴⁰⁷²¹ is an apocalyptic number.

It is an amenable number.

940721 is a deficient number, since it is larger than the sum of its proper divisors (1).

940721 is an equidigital number, since it uses as much as digits as its factorization.

940721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 940721 is about 969.9077275700. The cubic root of 940721 is about 97.9836499171.

It can be divided in two parts, 940 and 721, that added together give a palindrome (1661).

The spelling of 940721 in words is "nine hundred forty thousand, seven hundred twenty-one".