20123417 has 2 divisors, whose sum is σ = 20123418. Its totient is φ = 20123416.

The previous prime is 20123401. The next prime is 20123431. The reversal of 20123417 is 71432102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20106256 + 17161 = 4484^2 + 131^2 .

It is a cyclic number.

It is not a de Polignac number, because 20123417 - 2⁴ = 20123401 is a prime.

It is not a weakly prime, because it can be changed into another prime (20123437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061708 + 10061709.

It is an arithmetic number, because the mean of its divisors is an integer number (10061709).

Almost surely, 2^20123417 is an apocalyptic number.

It is an amenable number.

20123417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123417 is an equidigital number, since it uses as much as digits as its factorization.

20123417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20123417 is about 4485.9131734798. The cubic root of 20123417 is about 271.9989592304.

Adding to 20123417 its reverse (71432102), we get a palindrome (91555519).

The spelling of 20123417 in words is "twenty million, one hundred twenty-three thousand, four hundred seventeen".