420209341 has 2 divisors, whose sum is σ = 420209342. Its totient is φ = 420209340.

The previous prime is 420209303. The next prime is 420209351. The reversal of 420209341 is 143902024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324756441 + 95452900 = 18021^2 + 9770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420209341 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420209351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210104670 + 210104671.

It is an arithmetic number, because the mean of its divisors is an integer number (210104671).

Almost surely, 2^420209341 is an apocalyptic number.

It is an amenable number.

420209341 is a deficient number, since it is larger than the sum of its proper divisors (1).

420209341 is an equidigital number, since it uses as much as digits as its factorization.

420209341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 420209341 is about 20499.0082930858. The cubic root of 420209341 is about 749.0116409154.

The spelling of 420209341 in words is "four hundred twenty million, two hundred nine thousand, three hundred forty-one".