360404021 has 2 divisors, whose sum is σ = 360404022. Its totient is φ = 360404020.

The previous prime is 360404017. The next prime is 360404039. The reversal of 360404021 is 120404063.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269944900 + 90459121 = 16430^2 + 9511^2 .

It is a cyclic number.

It is not a de Polignac number, because 360404021 - 2² = 360404017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 360403984 and 360404002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (360404071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180202010 + 180202011.

It is an arithmetic number, because the mean of its divisors is an integer number (180202011).

Almost surely, 2^360404021 is an apocalyptic number.

It is an amenable number.

360404021 is a deficient number, since it is larger than the sum of its proper divisors (1).

360404021 is an equidigital number, since it uses as much as digits as its factorization.

360404021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 360404021 is about 18984.3098636743. The cubic root of 360404021 is about 711.6446835517.

Adding to 360404021 its reverse (120404063), we get a palindrome (480808084).

The spelling of 360404021 in words is "three hundred sixty million, four hundred four thousand, twenty-one".