20124623 has 2 divisors, whose sum is σ = 20124624. Its totient is φ = 20124622.

The previous prime is 20124619. The next prime is 20124631. The reversal of 20124623 is 32642102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124623 - 2² = 20124619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20124595 and 20124604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062311 + 10062312.

It is an arithmetic number, because the mean of its divisors is an integer number (10062312).

Almost surely, 2^20124623 is an apocalyptic number.

20124623 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124623 is an equidigital number, since it uses as much as digits as its factorization.

20124623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20124623 is about 4486.0475922576. The cubic root of 20124623 is about 272.0043927708.

Adding to 20124623 its reverse (32642102), we get a palindrome (52766725).

The spelling of 20124623 in words is "twenty million, one hundred twenty-four thousand, six hundred twenty-three".