420343459 has 2 divisors, whose sum is σ = 420343460. Its totient is φ = 420343458.

The previous prime is 420343409. The next prime is 420343481. The reversal of 420343459 is 954343024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420343459 is a prime.

It is not a weakly prime, because it can be changed into another prime (420343409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210171729 + 210171730.

It is an arithmetic number, because the mean of its divisors is an integer number (210171730).

Almost surely, 2^420343459 is an apocalyptic number.

420343459 is a deficient number, since it is larger than the sum of its proper divisors (1).

420343459 is an equidigital number, since it uses as much as digits as its factorization.

420343459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 420343459 is about 20502.2793610857. The cubic root of 420343459 is about 749.0913196595.

The spelling of 420343459 in words is "four hundred twenty million, three hundred forty-three thousand, four hundred fifty-nine".