4205645120 has 28 divisors (see below), whose sum is σ = 10014693204. Its totient is φ = 1682257920.

The previous prime is 4205645111. The next prime is 4205645123. The reversal of 4205645120 is 215465024.

It can be written as a sum of positive squares in 2 ways, for example, as 2512816384 + 1692828736 = 50128^2 + 41144^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4205645123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6571001 + ... + 6571640.

Almost surely, 2^4205645120 is an apocalyptic number.

4205645120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4205645120 is an abundant number, since it is smaller than the sum of its proper divisors (5809048084).

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

4205645120 is a wasteful number, since it uses less digits than its factorization.

4205645120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13142658 (or 13142648 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 4205645120 is about 64850.9454055991. The cubic root of 4205645120 is about 1614.1511794172.

The spelling of 4205645120 in words is "four billion, two hundred five million, six hundred forty-five thousand, one hundred twenty".