65242172 has 6 divisors (see below), whose sum is σ = 114173808. Its totient is φ = 32621084.

The previous prime is 65242171. The next prime is 65242187. The reversal of 65242172 is 27124256.

It is a happy number.

65242172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65242171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8155268 + ... + 8155275.

It is an arithmetic number, because the mean of its divisors is an integer number (19028968).

Almost surely, 2^65242172 is an apocalyptic number.

It is an amenable number.

65242172 is a deficient number, since it is larger than the sum of its proper divisors (48931636).

65242172 is a wasteful number, since it uses less digits than its factorization.

65242172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16310547 (or 16310545 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 65242172 is about 8077.2626551326. The cubic root of 65242172 is about 402.5712940336.

It can be divided in two parts, 652 and 42172, that added together give a palindrome (42824).

The spelling of 65242172 in words is "sixty-five million, two hundred forty-two thousand, one hundred seventy-two".