420411813 has 4 divisors (see below), whose sum is σ = 560549088. Its totient is φ = 280274540.

The previous prime is 420411809. The next prime is 420411821. The reversal of 420411813 is 318114024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420411813 - 2² = 420411809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420411833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70068633 + ... + 70068638.

It is an arithmetic number, because the mean of its divisors is an integer number (140137272).

Almost surely, 2^420411813 is an apocalyptic number.

It is an amenable number.

420411813 is a deficient number, since it is larger than the sum of its proper divisors (140137275).

420411813 is a wasteful number, since it uses less digits than its factorization.

420411813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140137274.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 420411813 is about 20503.9462787045. The cubic root of 420411813 is about 749.1319218637.

Adding to 420411813 its reverse (318114024), we get a palindrome (738525837).

The spelling of 420411813 in words is "four hundred twenty million, four hundred eleven thousand, eight hundred thirteen".