6440124234 has 64 divisors (see below), whose sum is σ = 13312076544.
Its totient is φ = 2076112896.
The previous prime is 6440124211. The next prime is 6440124247. The reversal of 6440124234 is 4324210446.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11561884 + ... + 11562440.
It is an arithmetic number, because the mean of its divisors is an integer number (208001196).
Almost surely, 26440124234 is an apocalyptic number.
6440124234 is an abundant number, since it is smaller than the sum of its proper divisors (6871952310).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6440124234 is a wasteful number, since it uses less digits than its factorization.
6440124234 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1071.
The product of its (nonzero) digits is 18432, while the sum is 30.
The square root of 6440124234 is about 80250.3846345923.
The cubic root of 6440124234 is about 1860.5074572155.
The spelling of 6440124234 in words is "six billion, four hundred forty million, one hundred twenty-four thousand, two hundred thirty-four".