20145127 has 2 divisors, whose sum is σ = 20145128. Its totient is φ = 20145126.

The previous prime is 20145109. The next prime is 20145163. The reversal of 20145127 is 72154102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20145127 is a prime.

It is a super-2 number, since 2×20145127² = 811652283692258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20145098 and 20145107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20145107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072563 + 10072564.

It is an arithmetic number, because the mean of its divisors is an integer number (10072564).

Almost surely, 2^20145127 is an apocalyptic number.

20145127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145127 is an equidigital number, since it uses as much as digits as its factorization.

20145127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20145127 is about 4488.3323183561. The cubic root of 20145127 is about 272.0967387663.

Adding to 20145127 its reverse (72154102), we get a palindrome (92299229).

The spelling of 20145127 in words is "twenty million, one hundred forty-five thousand, one hundred twenty-seven".