65120143 has 12 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 58525280.

The previous prime is 65120137. The next prime is 65120203. The reversal of 65120143 is 34102156.

It is not a de Polignac number, because 65120143 - 2¹³ = 65111951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65120743) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7746 + ... + 13792.

It is an arithmetic number, because the mean of its divisors is an integer number (6032880).

Almost surely, 2^65120143 is an apocalyptic number.

65120143 is a deficient number, since it is larger than the sum of its proper divisors (7274417).

65120143 is a wasteful number, since it uses less digits than its factorization.

65120143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158 (or 6147 counting only the distinct ones).

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

The square root of 65120143 is about 8069.7052610365. The cubic root of 65120143 is about 402.3201475188.

Adding to 65120143 its reverse (34102156), we get a palindrome (99222299).

The spelling of 65120143 in words is "sixty-five million, one hundred twenty thousand, one hundred forty-three".