90120059 has 4 divisors (see below), whose sum is σ = 94863240. Its totient is φ = 85376880.

The previous prime is 90120053. The next prime is 90120071. The reversal of 90120059 is 95002109.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95002109 = 19 ⋅5000111.

It is a de Polignac number, because none of the positive numbers 2^k-90120059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90120053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2371562 + ... + 2371599.

It is an arithmetic number, because the mean of its divisors is an integer number (23715810).

Almost surely, 2^90120059 is an apocalyptic number.

90120059 is a deficient number, since it is larger than the sum of its proper divisors (4743181).

90120059 is a wasteful number, since it uses less digits than its factorization.

90120059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4743180.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 90120059 is about 9493.1585365462. The cubic root of 90120059 is about 448.3396575840.

The spelling of 90120059 in words is "ninety million, one hundred twenty thousand, fifty-nine".