1039021 has 2 divisors, whose sum is σ = 1039022. Its totient is φ = 1039020.

The previous prime is 1039007. The next prime is 1039033. The reversal of 1039021 is 1209301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022121 + 16900 = 1011^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1039021 - 2¹⁵ = 1006253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1038986 and 1039004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1039001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519510 + 519511.

It is an arithmetic number, because the mean of its divisors is an integer number (519511).

2^1039021 is an apocalyptic number.

It is an amenable number.

1039021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1039021 is an equidigital number, since it uses as much as digits as its factorization.

1039021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1039021 is about 1019.3237954644. The cubic root of 1039021 is about 101.2841392777.

The spelling of 1039021 in words is "one million, thirty-nine thousand, twenty-one".