420140243534305 has 16 divisors (see below), whose sum is σ = 576198180149760. Its totient is φ = 288093243915072.

The previous prime is 420140243534273. The next prime is 420140243534309. The reversal of 420140243534305 is 503435342041024.

It is a cyclic number.

It is not a de Polignac number, because 420140243534305 - 2⁵ = 420140243534273 is a prime.

It is a super-2 number, since 2×420140243534305² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420140243534309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57395814 + ... + 64300543.

It is an arithmetic number, because the mean of its divisors is an integer number (36012386259360).

Almost surely, 2^{420140243534305} is an apocalyptic number.

It is an amenable number.

420140243534305 is a deficient number, since it is larger than the sum of its proper divisors (156057936615455).

420140243534305 is a wasteful number, since it uses less digits than its factorization.

420140243534305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121795008.

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 420140243534305 its reverse (503435342041024), we get a palindrome (923575585575329).

The spelling of 420140243534305 in words is "four hundred twenty trillion, one hundred forty billion, two hundred forty-three million, five hundred thirty-four thousand, three hundred five".