90127 has 2 divisors, whose sum is σ = 90128. Its totient is φ = 90126.

The previous prime is 90121. The next prime is 90149. The reversal of 90127 is 72109.

It is a weak prime.

It is an emirp because it is prime and its reverse (72109) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90127 - 2¹¹ = 88079 is a prime.

It is a super-2 number, since 2×90127² = 16245752258, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

90127 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45063 + 45064.

It is an arithmetic number, because the mean of its divisors is an integer number (45064).

2⁹⁰¹²⁷ is an apocalyptic number.

90127 is a deficient number, since it is larger than the sum of its proper divisors (1).

90127 is an equidigital number, since it uses as much as digits as its factorization.

90127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 90127 is about 300.2115920480. The cubic root of 90127 is about 44.8351167584.

The spelling of 90127 in words is "ninety thousand, one hundred twenty-seven".