20124417 has 8 divisors (see below), whose sum is σ = 27004096. Its totient is φ = 13330512.

The previous prime is 20124409. The next prime is 20124437. The reversal of 20124417 is 71442102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20124417 - 2³ = 20124409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20124393 and 20124402.

It is not an unprimeable number, because it can be changed into a prime (20124407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20893 + ... + 21834.

It is an arithmetic number, because the mean of its divisors is an integer number (3375512).

Almost surely, 2^20124417 is an apocalyptic number.

It is an amenable number.

20124417 is a deficient number, since it is larger than the sum of its proper divisors (6879679).

20124417 is a wasteful number, since it uses less digits than its factorization.

20124417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42887.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20124417 is about 4486.0246321214. The cubic root of 20124417 is about 272.0034646690.

Adding to 20124417 its reverse (71442102), we get a palindrome (91566519).

The spelling of 20124417 in words is "twenty million, one hundred twenty-four thousand, four hundred seventeen".