23832421 has 2 divisors, whose sum is σ = 23832422. Its totient is φ = 23832420.

The previous prime is 23832409. The next prime is 23832463. The reversal of 23832421 is 12423832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22752900 + 1079521 = 4770^2 + 1039^2 .

It is a cyclic number.

It is not a de Polignac number, because 23832421 - 2¹⁵ = 23799653 is a prime.

It is a super-4 number, since 4×23832421⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23832121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11916210 + 11916211.

It is an arithmetic number, because the mean of its divisors is an integer number (11916211).

Almost surely, 2^23832421 is an apocalyptic number.

It is an amenable number.

23832421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23832421 is an equidigital number, since it uses as much as digits as its factorization.

23832421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 23832421 is about 4881.8460647587. The cubic root of 23832421 is about 287.7769822144.

The spelling of 23832421 in words is "twenty-three million, eight hundred thirty-two thousand, four hundred twenty-one".