6420131 has 8 divisors (see below), whose sum is σ = 6720384. Its totient is φ = 6125760.

The previous prime is 6420109. The next prime is 6420173. The reversal of 6420131 is 1310246.

6420131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6420131 - 2¹⁰ = 6419107 is a prime.

It is a super-2 number, since 2×6420131² = 82436164114322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6420031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 845 + ... + 3681.

It is an arithmetic number, because the mean of its divisors is an integer number (840048).

Almost surely, 2^6420131 is an apocalyptic number.

6420131 is a deficient number, since it is larger than the sum of its proper divisors (300253).

6420131 is a wasteful number, since it uses less digits than its factorization.

6420131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 6420131 is about 2533.7977425201. The cubic root of 6420131 is about 185.8580158965.

Adding to 6420131 its reverse (1310246), we get a palindrome (7730377).

The spelling of 6420131 in words is "six million, four hundred twenty thousand, one hundred thirty-one".