1208021 has 2 divisors, whose sum is σ = 1208022. Its totient is φ = 1208020.

The previous prime is 1208017. The next prime is 1208023.

1208021 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 504100 = 839^2 + 710^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1208021 - 2² = 1208017 is a prime.

Together with 1208023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1207987 and 1208005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1208023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604010 + 604011.

It is an arithmetic number, because the mean of its divisors is an integer number (604011).

2^1208021 is an apocalyptic number.

It is an amenable number.

1208021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208021 is an equidigital number, since it uses as much as digits as its factorization.

1208021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1208021 is about 1099.1000864344. The cubic root of 1208021 is about 106.5020975731.

The spelling of 1208021 in words is "one million, two hundred eight thousand, twenty-one".