420454505 has 8 divisors (see below), whose sum is σ = 504878400. Its totient is φ = 336141616.

The previous prime is 420454483. The next prime is 420454537. The reversal of 420454505 is 505454024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420454505 - 2¹⁴ = 420438121 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19175 + ... + 34764.

It is an arithmetic number, because the mean of its divisors is an integer number (63109800).

Almost surely, 2^420454505 is an apocalyptic number.

It is an amenable number.

420454505 is a deficient number, since it is larger than the sum of its proper divisors (84423895).

420454505 is a wasteful number, since it uses less digits than its factorization.

420454505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55503.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 420454505 is about 20504.9873201619. The cubic root of 420454505 is about 749.1572786341.

The spelling of 420454505 in words is "four hundred twenty million, four hundred fifty-four thousand, five hundred five".