1232012421 has 24 divisors (see below), whose sum is σ = 1923873120. Its totient is φ = 757079136.

The previous prime is 1232012387. The next prime is 1232012471. The reversal of 1232012421 is 1242102321.

It is a happy number.

1232012421 is a `hidden beast` number, since 1 + 232 + 0 + 12 + 421 = 666.

It is not a de Polignac number, because 1232012421 - 2⁶ = 1232012357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232012394 and 1232012403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232012471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91035 + ... + 103688.

It is an arithmetic number, because the mean of its divisors is an integer number (80161380).

Almost surely, 2^1232012421 is an apocalyptic number.

It is an amenable number.

1232012421 is a deficient number, since it is larger than the sum of its proper divisors (691860699).

1232012421 is a wasteful number, since it uses less digits than its factorization.

1232012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194785 (or 194782 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1232012421 is about 35100.0344871625. The cubic root of 1232012421 is about 1072.0252848815.

Adding to 1232012421 its reverse (1242102321), we get a palindrome (2474114742).

The spelling of 1232012421 in words is "one billion, two hundred thirty-two million, twelve thousand, four hundred twenty-one".