65140142 has 4 divisors (see below), whose sum is σ = 97710216. Its totient is φ = 32570070.

The previous prime is 65140139. The next prime is 65140169. The reversal of 65140142 is 24104156.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16285034 + ... + 16285037.

It is an arithmetic number, because the mean of its divisors is an integer number (24427554).

Almost surely, 2^65140142 is an apocalyptic number.

65140142 is a deficient number, since it is larger than the sum of its proper divisors (32570074).

65140142 is a wasteful number, since it uses less digits than its factorization.

65140142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32570073.

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

The square root of 65140142 is about 8070.9443065852. The cubic root of 65140142 is about 402.3613287199.

Adding to 65140142 its reverse (24104156), we get a palindrome (89244298).

The spelling of 65140142 in words is "sixty-five million, one hundred forty thousand, one hundred forty-two".