65072542 has 4 divisors (see below), whose sum is σ = 97608816. Its totient is φ = 32536270.

The previous prime is 65072521. The next prime is 65072551. The reversal of 65072542 is 24527056.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16268134 + ... + 16268137.

It is an arithmetic number, because the mean of its divisors is an integer number (24402204).

Almost surely, 2^65072542 is an apocalyptic number.

65072542 is a deficient number, since it is larger than the sum of its proper divisors (32536274).

65072542 is a wasteful number, since it uses less digits than its factorization.

65072542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32536273.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 65072542 is about 8066.7553576392. The cubic root of 65072542 is about 402.2220953719. Note that the first 3 decimals are identical.

Adding to 65072542 its reverse (24527056), we get a palindrome (89599598).

The spelling of 65072542 in words is "sixty-five million, seventy-two thousand, five hundred forty-two".