4072138122 has 64 divisors (see below), whose sum is σ = 9108279936. Its totient is φ = 1205591040.

The previous prime is 4072138117. The next prime is 4072138123. The reversal of 4072138122 is 2218312704.

It is a self number, because there is not a number n which added to its sum of digits gives 4072138122.

It is not an unprimeable number, because it can be changed into a prime (4072138123) 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 31 ways as a sum of consecutive naturals, for example, 224733 + ... + 242175.

It is an arithmetic number, because the mean of its divisors is an integer number (142316874).

Almost surely, 2^4072138122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4072138122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4554139968).

4072138122 is an abundant number, since it is smaller than the sum of its proper divisors (5036141814).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4072138122 is a wasteful number, since it uses less digits than its factorization.

4072138122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17575.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 4072138122 is about 63813.3067784455. The cubic root of 4072138122 is about 1596.8869315668.

The spelling of 4072138122 in words is "four billion, seventy-two million, one hundred thirty-eight thousand, one hundred twenty-two".