4134126621 has 4 divisors (see below), whose sum is σ = 5512168832. Its totient is φ = 2756084412.

The previous prime is 4134126599. The next prime is 4134126631. The reversal of 4134126621 is 1266214314.

4134126621 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-4134126621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4134126631) 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 3 ways as a sum of consecutive naturals, for example, 689021101 + ... + 689021106.

It is an arithmetic number, because the mean of its divisors is an integer number (1378042208).

Almost surely, 2^4134126621 is an apocalyptic number.

It is an amenable number.

4134126621 is a deficient number, since it is larger than the sum of its proper divisors (1378042211).

4134126621 is a wasteful number, since it uses less digits than its factorization.

4134126621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378042210.

The product of its digits is 6912, while the sum is 30.

The square root of 4134126621 is about 64297.1742847227. The cubic root of 4134126621 is about 1604.9490796240.

The spelling of 4134126621 in words is "four billion, one hundred thirty-four million, one hundred twenty-six thousand, six hundred twenty-one".