420454791 has 24 divisors (see below), whose sum is σ = 626530320. Its totient is φ = 271506816.

The previous prime is 420454753. The next prime is 420454823. The reversal of 420454791 is 197454024.

It is a happy number.

420454791 is a `hidden beast` number, since 4 + 20 + 4 + 547 + 91 = 666.

It is not a de Polignac number, because 420454791 - 2¹¹ = 420452743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420454721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74880 + ... + 80298.

It is an arithmetic number, because the mean of its divisors is an integer number (26105430).

Almost surely, 2^420454791 is an apocalyptic number.

420454791 is a deficient number, since it is larger than the sum of its proper divisors (206075529).

420454791 is a wasteful number, since it uses less digits than its factorization.

420454791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5695 (or 5692 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 420454791 is about 20504.9942940738. The cubic root of 420454791 is about 749.1574484971.

The spelling of 420454791 in words is "four hundred twenty million, four hundred fifty-four thousand, seven hundred ninety-one".