65124140 has 48 divisors (see below), whose sum is σ = 144547200. Its totient is φ = 24605952.

The previous prime is 65124139. The next prime is 65124173. The reversal of 65124140 is 4142156.

It is a super-2 number, since 2×65124140² = 8482307221479200, which contains 22 as substring.

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, 26066 + ... + 28454.

It is an arithmetic number, because the mean of its divisors is an integer number (3011400).

Almost surely, 2^65124140 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 65124140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72273600).

65124140 is an abundant number, since it is smaller than the sum of its proper divisors (79423060).

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

65124140 is a wasteful number, since it uses less digits than its factorization.

65124140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474 (or 2472 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 65124140 is about 8069.9529118824. The cubic root of 65124140 is about 402.3283786675.

Adding to 65124140 its reverse (4142156), we get a palindrome (69266296).

The spelling of 65124140 in words is "sixty-five million, one hundred twenty-four thousand, one hundred forty".