420500455 has 8 divisors (see below), whose sum is σ = 505606752. Its totient is φ = 335729568.

The previous prime is 420500413. The next prime is 420500497. The reversal of 420500455 is 554005024.

It is an interprime number because it is at equal distance from previous prime (420500413) and next prime (420500497).

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 420500455 - 2²⁵ = 386946023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81084 + ... + 86113.

It is an arithmetic number, because the mean of its divisors is an integer number (63200844).

Almost surely, 2^420500455 is an apocalyptic number.

420500455 is a deficient number, since it is larger than the sum of its proper divisors (85106297).

420500455 is a wasteful number, since it uses less digits than its factorization.

420500455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167705.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 420500455 is about 20506.1077486684. The cubic root of 420500455 is about 749.1845685649.

Adding to 420500455 its reverse (554005024), we get a palindrome (974505479).

The spelling of 420500455 in words is "four hundred twenty million, five hundred thousand, four hundred fifty-five".