2124041778 has 80 divisors (see below), whose sum is σ = 5060687544. Its totient is φ = 663552000.

The previous prime is 2124041767. The next prime is 2124041779. The reversal of 2124041778 is 8771404212.

It can be written as a sum of positive squares in 4 ways, for example, as 2101030569 + 23011209 = 45837^2 + 4797^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2124041779) 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 39 ways as a sum of consecutive naturals, for example, 706278 + ... + 709278.

Almost surely, 2^2124041778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2124041778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2530343772).

2124041778 is an abundant number, since it is smaller than the sum of its proper divisors (2936645766).

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

2124041778 is a wasteful number, since it uses less digits than its factorization.

2124041778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289 (or 3280 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 2124041778 is about 46087.3277376764. The cubic root of 2124041778 is about 1285.4475224646.

The spelling of 2124041778 in words is "two billion, one hundred twenty-four million, forty-one thousand, seven hundred seventy-eight".