420218087 has 8 divisors (see below), whose sum is σ = 446900976. Its totient is φ = 393753472.

The previous prime is 420218083. The next prime is 420218093. The reversal of 420218087 is 780812024.

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 420218087 - 2² = 420218083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420218083) 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, 50588 + ... + 58305.

It is an arithmetic number, because the mean of its divisors is an integer number (55862622).

Almost surely, 2^420218087 is an apocalyptic number.

420218087 is a deficient number, since it is larger than the sum of its proper divisors (26682889).

420218087 is a wasteful number, since it uses less digits than its factorization.

420218087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109137.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 420218087 is about 20499.2216193689. The cubic root of 420218087 is about 749.0168373811.

The spelling of 420218087 in words is "four hundred twenty million, two hundred eighteen thousand, eighty-seven".