420954791 has 2 divisors, whose sum is σ = 420954792. Its totient is φ = 420954790.

The previous prime is 420954773. The next prime is 420954817. The reversal of 420954791 is 197459024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420954791 - 2⁶ = 420954727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420950791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210477395 + 210477396.

It is an arithmetic number, because the mean of its divisors is an integer number (210477396).

Almost surely, 2^420954791 is an apocalyptic number.

420954791 is a deficient number, since it is larger than the sum of its proper divisors (1).

420954791 is an equidigital number, since it uses as much as digits as its factorization.

420954791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 420954791 is about 20517.1828231851. The cubic root of 420954791 is about 749.4542939992.

The spelling of 420954791 in words is "four hundred twenty million, nine hundred fifty-four thousand, seven hundred ninety-one".