1021973 has 2 divisors, whose sum is σ = 1021974. Its totient is φ = 1021972.

The previous prime is 1021963. The next prime is 1022011. The reversal of 1021973 is 3791201.

1021973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 879844 + 142129 = 938^2 + 377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510986 + 510987.

It is an arithmetic number, because the mean of its divisors is an integer number (510987).

2^1021973 is an apocalyptic number.

It is an amenable number.

1021973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021973 is an equidigital number, since it uses as much as digits as its factorization.

1021973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1021973 is about 1010.9268024936. The cubic root of 1021973 is about 100.7271332901.

The spelling of 1021973 in words is "one million, twenty-one thousand, nine hundred seventy-three".