23421641 has 2 divisors, whose sum is σ = 23421642. Its totient is φ = 23421640.

The previous prime is 23421617. The next prime is 23421649. The reversal of 23421641 is 14612432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23319241 + 102400 = 4829^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 23421641 - 2⁶ = 23421577 is a prime.

It is equal to p_1473080 and since 23421641 and 1473080 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (23421649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710820 + 11710821.

It is an arithmetic number, because the mean of its divisors is an integer number (11710821).

Almost surely, 2^23421641 is an apocalyptic number.

It is an amenable number.

23421641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421641 is an equidigital number, since it uses as much as digits as its factorization.

23421641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 23421641 is about 4839.5909951152. The cubic root of 23421641 is about 286.1139984362.

The spelling of 23421641 in words is "twenty-three million, four hundred twenty-one thousand, six hundred forty-one".