4065421131 has 16 divisors (see below), whose sum is σ = 6024614400. Its totient is φ = 2709485064.

The previous prime is 4065421103. The next prime is 4065421201. The reversal of 4065421131 is 1311245604.

It is a happy number.

4065421131 is a `hidden beast` number, since 4 + 0 + 6 + 542 + 113 + 1 = 666.

It is not a de Polignac number, because 4065421131 - 2¹⁵ = 4065388363 is a prime.

It is a super-2 number, since 2×4065421131² = 33055297944762638322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4065421095 and 4065421104.

It is not an unprimeable number, because it can be changed into a prime (4065421831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80170 + ... + 120656.

It is an arithmetic number, because the mean of its divisors is an integer number (376538400).

Almost surely, 2^4065421131 is an apocalyptic number.

4065421131 is a deficient number, since it is larger than the sum of its proper divisors (1959193269).

4065421131 is a wasteful number, since it uses less digits than its factorization.

4065421131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44215 (or 44209 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4065421131 is about 63760.6550389815. The cubic root of 4065421131 is about 1596.0084268027.

Adding to 4065421131 its reverse (1311245604), we get a palindrome (5376666735).

The spelling of 4065421131 in words is "four billion, sixty-five million, four hundred twenty-one thousand, one hundred thirty-one".