4200232021 has 4 divisors (see below), whose sum is σ = 4200774732. Its totient is φ = 4199689312.

The previous prime is 4200231991. The next prime is 4200232027. The reversal of 4200232021 is 1202320024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1546848900 + 2653383121 = 39330^2 + 51511^2 .

It is a cyclic number.

It is not a de Polignac number, because 4200232021 - 2⁵ = 4200231989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4200231986 and 4200232004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4200232027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259576 + ... + 275281.

It is an arithmetic number, because the mean of its divisors is an integer number (1050193683).

Almost surely, 2^4200232021 is an apocalyptic number.

It is an amenable number.

4200232021 is a deficient number, since it is larger than the sum of its proper divisors (542711).

4200232021 is an equidigital number, since it uses as much as digits as its factorization.

4200232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542710.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 4200232021 is about 64809.1970402350. The cubic root of 4200232021 is about 1613.4583557416.

Adding to 4200232021 its reverse (1202320024), we get a palindrome (5402552045).

The spelling of 4200232021 in words is "four billion, two hundred million, two hundred thirty-two thousand, twenty-one".