12042890 has 8 divisors (see below), whose sum is σ = 21677220. Its totient is φ = 4817152.

The previous prime is 12042887. The next prime is 12042893. The reversal of 12042890 is 9824021.

12042890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12042887) and next prime (12042893).

It can be written as a sum of positive squares in 2 ways, for example, as 12020089 + 22801 = 3467^2 + 151^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12042893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602135 + ... + 602154.

Almost surely, 2^12042890 is an apocalyptic number.

12042890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12042890 is a deficient number, since it is larger than the sum of its proper divisors (9634330).

12042890 is a wasteful number, since it uses less digits than its factorization.

12042890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204296.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12042890 is about 3470.2867316693. The cubic root of 12042890 is about 229.2152841571.

The spelling of 12042890 in words is "twelve million, forty-two thousand, eight hundred ninety".