420555417 has 8 divisors (see below), whose sum is σ = 560962080. Its totient is φ = 280259520.

The previous prime is 420555379. The next prime is 420555427. The reversal of 420555417 is 714555024.

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

It is not a de Polignac number, because 420555417 - 2⁶ = 420555353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420555427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18384 + ... + 34337.

It is an arithmetic number, because the mean of its divisors is an integer number (70120260).

Almost surely, 2^420555417 is an apocalyptic number.

It is an amenable number.

420555417 is a deficient number, since it is larger than the sum of its proper divisors (140406663).

420555417 is a wasteful number, since it uses less digits than its factorization.

420555417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55383.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 420555417 is about 20507.4478421865. The cubic root of 420555417 is about 749.2172081557.

The spelling of 420555417 in words is "four hundred twenty million, five hundred fifty-five thousand, four hundred seventeen".