2811942126 has 96 divisors (see below), whose sum is σ = 7479264000. Its totient is φ = 761095440.

The previous prime is 2811942121. The next prime is 2811942139. The reversal of 2811942126 is 6212491182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2811942121) 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 47 ways as a sum of consecutive naturals, for example, 105321 + ... + 129291.

It is an arithmetic number, because the mean of its divisors is an integer number (77909000).

Almost surely, 2^2811942126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2811942126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3739632000).

2811942126 is an abundant number, since it is smaller than the sum of its proper divisors (4667321874).

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

2811942126 is a wasteful number, since it uses less digits than its factorization.

2811942126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24019 (or 24002 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2811942126 is about 53027.7486416310. The cubic root of 2811942126 is about 1411.4607074552.

The spelling of 2811942126 in words is "two billion, eight hundred eleven million, nine hundred forty-two thousand, one hundred twenty-six".