123032421 has 12 divisors (see below), whose sum is σ = 180217440. Its totient is φ = 80865960.

The previous prime is 123032401. The next prime is 123032491. The reversal of 123032421 is 124230321.

It is not a de Polignac number, because 123032421 - 2⁵ = 123032389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123032394 and 123032403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123032401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95631 + ... + 96908.

It is an arithmetic number, because the mean of its divisors is an integer number (15018120).

Almost surely, 2^123032421 is an apocalyptic number.

It is an amenable number.

123032421 is a deficient number, since it is larger than the sum of its proper divisors (57185019).

123032421 is a wasteful number, since it uses less digits than its factorization.

123032421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192616 (or 192613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123032421 is about 11091.9980616659. The cubic root of 123032421 is about 497.3626748237.

Adding to 123032421 its reverse (124230321), we get a palindrome (247262742).

The spelling of 123032421 in words is "one hundred twenty-three million, thirty-two thousand, four hundred twenty-one".