652128123 has 16 divisors (see below), whose sum is σ = 879181056. Its totient is φ = 429925920.

The previous prime is 652128119. The next prime is 652128137. The reversal of 652128123 is 321821256.

It is not a de Polignac number, because 652128123 - 2² = 652128119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (652128193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364036 + ... + 365822.

It is an arithmetic number, because the mean of its divisors is an integer number (54948816).

Almost surely, 2^652128123 is an apocalyptic number.

652128123 is a deficient number, since it is larger than the sum of its proper divisors (227052933).

652128123 is a wasteful number, since it uses less digits than its factorization.

652128123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074.

The product of its digits is 5760, while the sum is 30.

The square root of 652128123 is about 25536.7993883337. The cubic root of 652128123 is about 867.1834413205.

Adding to 652128123 its reverse (321821256), we get a palindrome (973949379).

The spelling of 652128123 in words is "six hundred fifty-two million, one hundred twenty-eight thousand, one hundred twenty-three".