653234121 has 12 divisors (see below), whose sum is σ = 957644272. Its totient is φ = 428989176.

The previous prime is 653234111. The next prime is 653234143. The reversal of 653234121 is 121432356.

653234121 is a `hidden beast` number, since 6 + 532 + 3 + 4 + 121 = 666.

It is not a de Polignac number, because 653234121 - 2⁵ = 653234089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653234111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 541051 + ... + 542256.

Almost surely, 2^653234121 is an apocalyptic number.

It is an amenable number.

653234121 is a deficient number, since it is larger than the sum of its proper divisors (304410151).

653234121 is a wasteful number, since it uses less digits than its factorization.

653234121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083380 (or 1083377 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 653234121 is about 25558.4451991900. The cubic root of 653234121 is about 867.6734071318.

Adding to 653234121 its reverse (121432356), we get a palindrome (774666477).

The spelling of 653234121 in words is "six hundred fifty-three million, two hundred thirty-four thousand, one hundred twenty-one".