421053361 has 2 divisors, whose sum is σ = 421053362. Its totient is φ = 421053360.

The previous prime is 421053317. The next prime is 421053371. The reversal of 421053361 is 163350124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411318961 + 9734400 = 20281^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 421053361 - 2¹³ = 421045169 is a prime.

It is not a weakly prime, because it can be changed into another prime (421053301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210526680 + 210526681.

It is an arithmetic number, because the mean of its divisors is an integer number (210526681).

Almost surely, 2^421053361 is an apocalyptic number.

It is an amenable number.

421053361 is a deficient number, since it is larger than the sum of its proper divisors (1).

421053361 is an equidigital number, since it uses as much as digits as its factorization.

421053361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 421053361 is about 20519.5848154879. The cubic root of 421053361 is about 749.5127863805.

The spelling of 421053361 in words is "four hundred twenty-one million, fifty-three thousand, three hundred sixty-one".