4126321687 has 4 divisors (see below), whose sum is σ = 4126458096. Its totient is φ = 4126185280.

The previous prime is 4126321657. The next prime is 4126321729. The reversal of 4126321687 is 7861236214.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4126321687 - 2⁷ = 4126321559 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4126321657) 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 in 3 ways as a sum of consecutive naturals, for example, 283 + ... + 90844.

It is an arithmetic number, because the mean of its divisors is an integer number (1031614524).

Almost surely, 2^4126321687 is an apocalyptic number.

4126321687 is a deficient number, since it is larger than the sum of its proper divisors (136409).

4126321687 is an equidigital number, since it uses as much as digits as its factorization.

4126321687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136408.

The product of its digits is 96768, while the sum is 40.

The square root of 4126321687 is about 64236.4513886002. The cubic root of 4126321687 is about 1603.9384338355.

The spelling of 4126321687 in words is "four billion, one hundred twenty-six million, three hundred twenty-one thousand, six hundred eighty-seven".