4023020023421 has 32 divisors (see below), whose sum is σ = 4675652812800. Its totient is φ = 3390154407360.

The previous prime is 4023020023391. The next prime is 4023020023423. The reversal of 4023020023421 is 1243200203204.

It is a de Polignac number, because none of the positive numbers 2^k-4023020023421 is a prime.

It is a super-3 number, since 3×4023020023421³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023020023423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261924740 + ... + 261940098.

It is an arithmetic number, because the mean of its divisors is an integer number (146114150400).

Almost surely, 2^{4023020023421} is an apocalyptic number.

It is an amenable number.

4023020023421 is a deficient number, since it is larger than the sum of its proper divisors (652632789379).

4023020023421 is a wasteful number, since it uses less digits than its factorization.

4023020023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16889.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 4023020023421 its reverse (1243200203204), we get a palindrome (5266220226625).

The spelling of 4023020023421 in words is "four trillion, twenty-three billion, twenty million, twenty-three thousand, four hundred twenty-one".