4122012620 has 144 divisors (see below), whose sum is σ = 10038712320. Its totient is φ = 1417848960.

The previous prime is 4122012563. The next prime is 4122012673. The reversal of 4122012620 is 262102214.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4122012592 and 4122012601.

It is an unprimeable number.

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, 5732621 + ... + 5733339.

It is an arithmetic number, because the mean of its divisors is an integer number (69713280).

Almost surely, 2^4122012620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4122012620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5019356160).

4122012620 is an abundant number, since it is smaller than the sum of its proper divisors (5916699700).

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

4122012620 is a wasteful number, since it uses less digits than its factorization.

4122012620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4122012620 is about 64202.9019593351. The cubic root of 4122012620 is about 1603.3799149775.

Adding to 4122012620 its reverse (262102214), we get a palindrome (4384114834).

The spelling of 4122012620 in words is "four billion, one hundred twenty-two million, twelve thousand, six hundred twenty".