420442524153005 has 4 divisors (see below), whose sum is σ = 504531028983612. Its totient is φ = 336354019322400.

The previous prime is 420442524152929. The next prime is 420442524153017. The reversal of 420442524153005 is 500351425244024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99071326157764 + 321371197995241 = 9953458^2 + 17926829^2 .

It is not a de Polignac number, because 420442524153005 - 2²² = 420442519958701 is a prime.

It is a super-2 number, since 2×420442524153005² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42044252415296 + ... + 42044252415305.

It is an arithmetic number, because the mean of its divisors is an integer number (126132757245903).

Almost surely, 2^{420442524153005} is an apocalyptic number.

It is an amenable number.

420442524153005 is a deficient number, since it is larger than the sum of its proper divisors (84088504830607).

420442524153005 is an equidigital number, since it uses as much as digits as its factorization.

420442524153005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84088504830606.

The product of its (nonzero) digits is 768000, while the sum is 41.

Adding to 420442524153005 its reverse (500351425244024), we get a palindrome (920793949397029).

The spelling of 420442524153005 in words is "four hundred twenty trillion, four hundred forty-two billion, five hundred twenty-four million, one hundred fifty-three thousand, five".