4121985870 has 48 divisors (see below), whose sum is σ = 10751045760. Its totient is φ = 1095721152.

The previous prime is 4121985839. The next prime is 4121985883. The reversal of 4121985870 is 785891214.

4121985870 is a `hidden beast` number, since 41 + 21 + 9 + 8 + 587 + 0 = 666.

4121985870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

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, 43710 + ... + 100769.

It is an arithmetic number, because the mean of its divisors is an integer number (223980120).

Almost surely, 2^4121985870 is an apocalyptic number.

4121985870 is an abundant number, since it is smaller than the sum of its proper divisors (6629059890).

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

4121985870 is a wasteful number, since it uses less digits than its factorization.

4121985870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144809 (or 144806 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 4121985870 is about 64202.6936350805. The cubic root of 4121985870 is about 1603.3764465662.

The spelling of 4121985870 in words is "four billion, one hundred twenty-one million, nine hundred eighty-five thousand, eight hundred seventy".