420518867 has 8 divisors (see below), whose sum is σ = 445353216. Its totient is φ = 396230472.

The previous prime is 420518809. The next prime is 420518873. The reversal of 420518867 is 768815024.

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 420518867 - 2¹⁶ = 420453331 is a prime.

It is a super-2 number, since 2×420518867² = 353672235005927378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420515867) 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, 134903 + ... + 137984.

It is an arithmetic number, because the mean of its divisors is an integer number (55669152).

Almost surely, 2^420518867 is an apocalyptic number.

420518867 is a deficient number, since it is larger than the sum of its proper divisors (24834349).

420518867 is a wasteful number, since it uses less digits than its factorization.

420518867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272977.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 420518867 is about 20506.5566831684. The cubic root of 420518867 is about 749.1955029843.

The spelling of 420518867 in words is "four hundred twenty million, five hundred eighteen thousand, eight hundred sixty-seven".