420241427 has 2 divisors, whose sum is σ = 420241428. Its totient is φ = 420241426.

The previous prime is 420241417. The next prime is 420241453. The reversal of 420241427 is 724142024.

It is an a-pointer prime, because the next prime (420241453) can be obtained adding 420241427 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420241427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420241396 and 420241405.

It is not a weakly prime, because it can be changed into another prime (420241417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210120713 + 210120714.

It is an arithmetic number, because the mean of its divisors is an integer number (210120714).

Almost surely, 2^420241427 is an apocalyptic number.

420241427 is a deficient number, since it is larger than the sum of its proper divisors (1).

420241427 is an equidigital number, since it uses as much as digits as its factorization.

420241427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 420241427 is about 20499.7909013726. The cubic root of 420241427 is about 749.0307045689.

The spelling of 420241427 in words is "four hundred twenty million, two hundred forty-one thousand, four hundred twenty-seven".