65216142 has 24 divisors (see below), whose sum is σ = 142556544. Its totient is φ = 21545664.

The previous prime is 65216141. The next prime is 65216147. The reversal of 65216142 is 24161256.

65216142 is a `hidden beast` number, since 652 + 1 + 6 + 1 + 4 + 2 = 666.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65216141) 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, 13998 + ... + 18065.

It is an arithmetic number, because the mean of its divisors is an integer number (5939856).

Almost surely, 2^65216142 is an apocalyptic number.

65216142 is an abundant number, since it is smaller than the sum of its proper divisors (77340402).

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

65216142 is a wasteful number, since it uses less digits than its factorization.

65216142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32184 (or 32181 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 65216142 is about 8075.6511811742. The cubic root of 65216142 is about 402.5177482754.

Adding to 65216142 its reverse (24161256), we get a palindrome (89377398).

The spelling of 65216142 in words is "sixty-five million, two hundred sixteen thousand, one hundred forty-two".