4023021143421 has 24 divisors (see below), whose sum is σ = 6732152806080. Its totient is φ = 2267377862976.

The previous prime is 4023021143359. The next prime is 4023021143437. The reversal of 4023021143421 is 1243411203204.

4023021143421 is a `hidden beast` number, since 4 + 0 + 2 + 302 + 1 + 14 + 342 + 1 = 666.

It is not a de Polignac number, because 4023021143421 - 2⁶ = 4023021143357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023021143021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 437375391 + ... + 437384588.

It is an arithmetic number, because the mean of its divisors is an integer number (280506366920).

Almost surely, 2^{4023021143421} is an apocalyptic number.

It is an amenable number.

4023021143421 is a deficient number, since it is larger than the sum of its proper divisors (2709131662659).

4023021143421 is a wasteful number, since it uses less digits than its factorization.

4023021143421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874760065 (or 874760062 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 4023021143421 its reverse (1243411203204), we get a palindrome (5266432346625).

The spelling of 4023021143421 in words is "four trillion, twenty-three billion, twenty-one million, one hundred forty-three thousand, four hundred twenty-one".