90041121 has 9 divisors (see below), whose sum is σ = 130100529. Its totient is φ = 60008436.

The previous prime is 90041101. The next prime is 90041173. The reversal of 90041121 is 12114009.

The square root of 90041121 is 9489.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 90041121 - 2¹¹ = 90039073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90041094 and 90041103.

It is not an unprimeable number, because it can be changed into a prime (90041101) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26886 + ... + 30048.

Almost surely, 2^90041121 is an apocalyptic number.

90041121 is the 9489-th square number.

90041121 is the 4745-th centered octagonal number.

It is an amenable number.

90041121 is a deficient number, since it is larger than the sum of its proper divisors (40059408).

90041121 is an frugal number, since it uses more digits than its factorization.

90041121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The cubic root of 90041121 is about 448.2087160579.

The spelling of 90041121 in words is "ninety million, forty-one thousand, one hundred twenty-one".