123121433432 has 16 divisors (see below), whose sum is σ = 230867816760. Its totient is φ = 61556682304.

The previous prime is 123121433411. The next prime is 123121433443. The reversal of 123121433432 is 234334121321.

It is a junction number, because it is equal to n+sod(n) for n = 123121433395 and 123121433404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372578 + ... + 620529.

Almost surely, 2^123121433432 is an apocalyptic number.

It is an amenable number.

123121433432 is a deficient number, since it is larger than the sum of its proper divisors (107746383328).

123121433432 is a wasteful number, since it uses less digits than its factorization.

123121433432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008610 (or 1008606 counting only the distinct ones).

The product of its digits is 10368, while the sum is 29.

Adding to 123121433432 its reverse (234334121321), we get a palindrome (357455554753).

The spelling of 123121433432 in words is "one hundred twenty-three billion, one hundred twenty-one million, four hundred thirty-three thousand, four hundred thirty-two".