6407134021 has 2 divisors, whose sum is σ = 6407134022. Its totient is φ = 6407134020.

The previous prime is 6407133977. The next prime is 6407134049. The reversal of 6407134021 is 1204317046.

It is an a-pointer prime, because the next prime (6407134049) can be obtained adding 6407134021 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6346512225 + 60621796 = 79665^2 + 7786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6407134021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6407132021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203567010 + 3203567011.

It is an arithmetic number, because the mean of its divisors is an integer number (3203567011).

Almost surely, 2^6407134021 is an apocalyptic number.

It is an amenable number.

6407134021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6407134021 is an equidigital number, since it uses as much as digits as its factorization.

6407134021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 6407134021 is about 80044.5752128150. The cubic root of 6407134021 is about 1857.3251354486.

The spelling of 6407134021 in words is "six billion, four hundred seven million, one hundred thirty-four thousand, twenty-one".