4122989920 has 144 divisors (see below), whose sum is σ = 11445325920. Its totient is φ = 1374879744.

The previous prime is 4122989917. The next prime is 4122989933. The reversal of 4122989920 is 299892214.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1531936 + ... + 1534624.

It is an arithmetic number, because the mean of its divisors is an integer number (79481430).

Almost surely, 2^4122989920 is an apocalyptic number.

4122989920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4122989920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5722662960).

4122989920 is an abundant number, since it is smaller than the sum of its proper divisors (7322336000).

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

4122989920 is a wasteful number, since it uses less digits than its factorization.

4122989920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 4122989920 is about 64210.5125349424. The cubic root of 4122989920 is about 1603.5066216385.

The spelling of 4122989920 in words is "four billion, one hundred twenty-two million, nine hundred eighty-nine thousand, nine hundred twenty".