4023242421 has 16 divisors (see below), whose sum is σ = 5894710848. Its totient is φ = 2420528000.

The previous prime is 4023242407. The next prime is 4023242453. The reversal of 4023242421 is 1242423204.

It is not a de Polignac number, because 4023242421 - 2¹⁴ = 4023226037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4023242391 and 4023242400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023242021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440430 + ... + 449471.

It is an arithmetic number, because the mean of its divisors is an integer number (368419428).

Almost surely, 2^4023242421 is an apocalyptic number.

It is an amenable number.

4023242421 is a deficient number, since it is larger than the sum of its proper divisors (1871468427).

4023242421 is a wasteful number, since it uses less digits than its factorization.

4023242421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890052.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4023242421 is about 63429.0345267843. The cubic root of 4023242421 is about 1590.4697030095.

Adding to 4023242421 its reverse (1242423204), we get a palindrome (5265665625).

The spelling of 4023242421 in words is "four billion, twenty-three million, two hundred forty-two thousand, four hundred twenty-one".