6420243411 has 8 divisors (see below), whose sum is σ = 9511471760. Its totient is φ = 4280162256.

The previous prime is 6420243407. The next prime is 6420243413. The reversal of 6420243411 is 1143420246.

It is a happy number.

6420243411 is a `hidden beast` number, since 6 + 4 + 2 + 0 + 243 + 411 = 666.

It is not a de Polignac number, because 6420243411 - 2² = 6420243407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 237786793 = 6420243411 / (6 + 4 + 2 + 0 + 2 + 4 + 3 + 4 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420243413) 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, 118893370 + ... + 118893423.

It is an arithmetic number, because the mean of its divisors is an integer number (1188933970).

Almost surely, 2^6420243411 is an apocalyptic number.

6420243411 is a deficient number, since it is larger than the sum of its proper divisors (3091228349).

6420243411 is a wasteful number, since it uses less digits than its factorization.

6420243411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237786802 (or 237786796 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 6420243411 is about 80126.4214288895. The cubic root of 6420243411 is about 1858.5910062847.

Adding to 6420243411 its reverse (1143420246), we get a palindrome (7563663657).

The spelling of 6420243411 in words is "six billion, four hundred twenty million, two hundred forty-three thousand, four hundred eleven".