3200123421 has 18 divisors (see below), whose sum is σ = 5080822110. Its totient is φ = 1939468080.

The previous prime is 3200123387. The next prime is 3200123447. The reversal of 3200123421 is 1243210023.

3200123421 is a `hidden beast` number, since 320 + 0 + 1 + 2 + 342 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2643399396 + 556724025 = 51414^2 + 23595^2 .

It is not a de Polignac number, because 3200123421 - 2⁷ = 3200123293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3200123394 and 3200123403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3200123471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1468206 + ... + 1470383.

It is an arithmetic number, because the mean of its divisors is an integer number (282267895).

Almost surely, 2^3200123421 is an apocalyptic number.

It is an amenable number.

3200123421 is a deficient number, since it is larger than the sum of its proper divisors (1880698689).

3200123421 is a wasteful number, since it uses less digits than its factorization.

3200123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938617 (or 2938603 counting only the distinct ones).

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

The square root of 3200123421 is about 56569.6333822308. The cubic root of 3200123421 is about 1473.6315444981.

Adding to 3200123421 its reverse (1243210023), we get a palindrome (4443333444).

It can be divided in two parts, 3200 and 123421, that added together give a palindrome (126621).

The spelling of 3200123421 in words is "three billion, two hundred million, one hundred twenty-three thousand, four hundred twenty-one".