20423041 has 2 divisors, whose sum is σ = 20423042. Its totient is φ = 20423040.

The previous prime is 20423023. The next prime is 20423071. The reversal of 20423041 is 14032402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 531441 = 4460^2 + 729^2 .

It is a cyclic number.

It is not a de Polignac number, because 20423041 - 2¹⁷ = 20291969 is a prime.

It is not a weakly prime, because it can be changed into another prime (20423071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211520 + 10211521.

It is an arithmetic number, because the mean of its divisors is an integer number (10211521).

Almost surely, 2^20423041 is an apocalyptic number.

It is an amenable number.

20423041 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423041 is an equidigital number, since it uses as much as digits as its factorization.

20423041 is an odious number, because the sum of its binary digits is odd.

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

The square root of 20423041 is about 4519.1858780094. The cubic root of 20423041 is about 273.3422739821.

Adding to 20423041 its reverse (14032402), we get a palindrome (34455443).

The spelling of 20423041 in words is "twenty million, four hundred twenty-three thousand, forty-one".