20012423 has 2 divisors, whose sum is σ = 20012424. Its totient is φ = 20012422.

The previous prime is 20012411. The next prime is 20012441. The reversal of 20012423 is 32421002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012423 - 2¹² = 20008327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012398 and 20012407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006211 + 10006212.

It is an arithmetic number, because the mean of its divisors is an integer number (10006212).

Almost surely, 2^20012423 is an apocalyptic number.

20012423 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012423 is an equidigital number, since it uses as much as digits as its factorization.

20012423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20012423 is about 4473.5246730067. The cubic root of 20012423 is about 271.4979520436.

Adding to 20012423 its reverse (32421002), we get a palindrome (52433425).

The spelling of 20012423 in words is "twenty million, twelve thousand, four hundred twenty-three".