4642023421 has 16 divisors (see below), whose sum is σ = 5502312448. Its totient is φ = 3832239600.

The previous prime is 4642023409. The next prime is 4642023521. The reversal of 4642023421 is 1243202464.

It is not a de Polignac number, because 4642023421 - 2¹⁹ = 4641499133 is a prime.

It is a super-2 number, since 2×4642023421² = 43096762882225086482, which contains 22 as substring.

It is a Duffinian number.

4642023421 is a modest number, since divided by 23421 gives 4642 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 4642023421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4642023401) 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, 4905 + ... + 96478.

It is an arithmetic number, because the mean of its divisors is an integer number (343894528).

Almost surely, 2^4642023421 is an apocalyptic number.

It is an amenable number.

4642023421 is a deficient number, since it is larger than the sum of its proper divisors (860289027).

4642023421 is a wasteful number, since it uses less digits than its factorization.

4642023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101632.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 4642023421 is about 68132.3962663871. The cubic root of 4642023421 is about 1668.1525964450.

Adding to 4642023421 its reverse (1243202464), we get a palindrome (5885225885).

The spelling of 4642023421 in words is "four billion, six hundred forty-two million, twenty-three thousand, four hundred twenty-one".