90122 has 4 divisors (see below), whose sum is σ = 135186. Its totient is φ = 45060.

The previous prime is 90121. The next prime is 90127. The reversal of 90122 is 22109.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58081 + 32041 = 241^2 + 179^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90097 and 90106.

It is not an unprimeable number, because it can be changed into a prime (90121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22529 + ... + 22532.

2⁹⁰¹²² is an apocalyptic number.

90122 is a deficient number, since it is larger than the sum of its proper divisors (45064).

90122 is a wasteful number, since it uses less digits than its factorization.

90122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45063.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 90122 is about 300.2032644726. The cubic root of 90122 is about 44.8342876331.

It can be divided in two parts, 90 and 122, that added together give a palindrome (212).

The spelling of 90122 in words is "ninety thousand, one hundred twenty-two".