90120271 has 8 divisors (see below), whose sum is σ = 93267504. Its totient is φ = 87010560.

The previous prime is 90120223. The next prime is 90120301. The reversal of 90120271 is 17202109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90120271 - 2⁷ = 90120143 is a prime.

It is a super-2 number, since 2×90120271² = 16243326490226882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90120221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4450 + ... + 14143.

It is an arithmetic number, because the mean of its divisors is an integer number (11658438).

Almost surely, 2^90120271 is an apocalyptic number.

90120271 is a deficient number, since it is larger than the sum of its proper divisors (3147233).

90120271 is a wasteful number, since it uses less digits than its factorization.

90120271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18761.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 90120271 is about 9493.1697024756. The cubic root of 90120271 is about 448.3400091444.

The spelling of 90120271 in words is "ninety million, one hundred twenty thousand, two hundred seventy-one".