12001090 has 8 divisors (see below), whose sum is σ = 21601980. Its totient is φ = 4800432.

The previous prime is 12001081. The next prime is 12001091. The reversal of 12001090 is 9010021.

It can be written as a sum of positive squares in 2 ways, for example, as 11758041 + 243049 = 3429^2 + 493^2 .

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

It is a super-2 number, since 2×12001090² = 288052322376200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12001090.

It is not an unprimeable number, because it can be changed into a prime (12001091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 600045 + ... + 600064.

Almost surely, 2^12001090 is an apocalyptic number.

12001090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12001090 is a deficient number, since it is larger than the sum of its proper divisors (9600890).

12001090 is a wasteful number, since it uses less digits than its factorization.

12001090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200116.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 12001090 is about 3464.2589395136. The cubic root of 12001090 is about 228.9497801815.

The spelling of 12001090 in words is "twelve million, one thousand, ninety".