6400142131 has 2 divisors, whose sum is σ = 6400142132. Its totient is φ = 6400142130.

The previous prime is 6400142129. The next prime is 6400142141. The reversal of 6400142131 is 1312410046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6400142131 - 2¹ = 6400142129 is a prime.

It is a super-2 number, since 2×6400142131² = 81923638594002442322, which contains 22 as substring.

Together with 6400142129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6400142141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200071065 + 3200071066.

It is an arithmetic number, because the mean of its divisors is an integer number (3200071066).

Almost surely, 2^6400142131 is an apocalyptic number.

6400142131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400142131 is an equidigital number, since it uses as much as digits as its factorization.

6400142131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 6400142131 is about 80000.8883138181. Note that the first 3 decimals coincide. The cubic root of 6400142131 is about 1856.6492773780.

Adding to 6400142131 its reverse (1312410046), we get a palindrome (7712552177).

The spelling of 6400142131 in words is "six billion, four hundred million, one hundred forty-two thousand, one hundred thirty-one".