2665420120 has 64 divisors (see below), whose sum is σ = 6594048000. Its totient is φ = 961591680.

The previous prime is 2665420103. The next prime is 2665420151. The reversal of 2665420120 is 210245662.

It is a super-2 number, since 2×2665420120² = 14208928832201628800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32031 + ... + 79729.

It is an arithmetic number, because the mean of its divisors is an integer number (103032000).

Almost surely, 2^2665420120 is an apocalyptic number.

2665420120 is a gapful number since it is divisible by the number (20) 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 2665420120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3297024000).

2665420120 is an abundant number, since it is smaller than the sum of its proper divisors (3928627880).

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

2665420120 is a wasteful number, since it uses less digits than its factorization.

2665420120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47848 (or 47844 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2665420120 is about 51627.7069023988. The cubic root of 2665420120 is about 1386.5064382275.

Adding to 2665420120 its reverse (210245662), we get a palindrome (2875665782).

The spelling of 2665420120 in words is "two billion, six hundred sixty-five million, four hundred twenty thousand, one hundred twenty".