420746927 has 2 divisors, whose sum is σ = 420746928. Its totient is φ = 420746926.

The previous prime is 420746917. The next prime is 420746929. The reversal of 420746927 is 729647024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420746927 - 2²⁰ = 419698351 is a prime.

Together with 420746929, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420746929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210373463 + 210373464.

It is an arithmetic number, because the mean of its divisors is an integer number (210373464).

Almost surely, 2^420746927 is an apocalyptic number.

420746927 is a deficient number, since it is larger than the sum of its proper divisors (1).

420746927 is an equidigital number, since it uses as much as digits as its factorization.

420746927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 420746927 is about 20512.1165899573. The cubic root of 420746927 is about 749.3309155752.

The spelling of 420746927 in words is "four hundred twenty million, seven hundred forty-six thousand, nine hundred twenty-seven".