420426047 has 2 divisors, whose sum is σ = 420426048. Its totient is φ = 420426046.

The previous prime is 420425987. The next prime is 420426059. The reversal of 420426047 is 740624024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420426047 - 2¹⁰ = 420425023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420426947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210213023 + 210213024.

It is an arithmetic number, because the mean of its divisors is an integer number (210213024).

Almost surely, 2^420426047 is an apocalyptic number.

420426047 is a deficient number, since it is larger than the sum of its proper divisors (1).

420426047 is an equidigital number, since it uses as much as digits as its factorization.

420426047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 420426047 is about 20504.2933796803. The cubic root of 420426047 is about 749.1403762911.

The spelling of 420426047 in words is "four hundred twenty million, four hundred twenty-six thousand, forty-seven".