65042123 has 4 divisors (see below), whose sum is σ = 67140288. Its totient is φ = 62943960.

The previous prime is 65042071. The next prime is 65042141. The reversal of 65042123 is 32124056.

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

It is a cyclic number.

It is not a de Polignac number, because 65042123 - 2¹² = 65038027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65042143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049036 + ... + 1049097.

It is an arithmetic number, because the mean of its divisors is an integer number (16785072).

Almost surely, 2^65042123 is an apocalyptic number.

65042123 is a deficient number, since it is larger than the sum of its proper divisors (2098165).

65042123 is a wasteful number, since it uses less digits than its factorization.

65042123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098164.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 65042123 is about 8064.8696827661. The cubic root of 65042123 is about 402.1594109660.

Adding to 65042123 its reverse (32124056), we get a palindrome (97166179).

The spelling of 65042123 in words is "sixty-five million, forty-two thousand, one hundred twenty-three".