65143120 has 80 divisors (see below), whose sum is σ = 176024448. Its totient is φ = 21957120.

The previous prime is 65143109. The next prime is 65143129. The reversal of 65143120 is 2134156.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 65143091 and 65143100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65143129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33207 + ... + 35113.

Almost surely, 2^65143120 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 65143120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88012224).

65143120 is an abundant number, since it is smaller than the sum of its proper divisors (110881328).

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

65143120 is a wasteful number, since it uses less digits than its factorization.

65143120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988 (or 1982 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 65143120 is about 8071.1287934216. The cubic root of 65143120 is about 402.3674601863.

Adding to 65143120 its reverse (2134156), we get a palindrome (67277276).

The spelling of 65143120 in words is "sixty-five million, one hundred forty-three thousand, one hundred twenty".