12020090 has 8 divisors (see below), whose sum is σ = 21636180. Its totient is φ = 4808032.

The previous prime is 12020083. The next prime is 12020119. The reversal of 12020090 is 9002021.

It is a Cunningham number, because it is equal to 3467²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 12020089 + 1 = 3467^2 + 1^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600995 + ... + 601014.

Almost surely, 2^12020090 is an apocalyptic number.

12020090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020090 is a deficient number, since it is larger than the sum of its proper divisors (9616090).

12020090 is a wasteful number, since it uses less digits than its factorization.

12020090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202016.

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

The square root of 12020090 is about 3467.0001442169. Note that the first 3 decimals coincide. The cubic root of 12020090 is about 229.0705401067.

The spelling of 12020090 in words is "twelve million, twenty thousand, ninety".