12042987 has 16 divisors (see below), whose sum is σ = 18548352. Its totient is φ = 6869120.

The previous prime is 12042983. The next prime is 12043001. The reversal of 12042987 is 78924021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12042987 - 2² = 12042983 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12042983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10173 + ... + 11294.

It is an arithmetic number, because the mean of its divisors is an integer number (1159272).

Almost surely, 2^12042987 is an apocalyptic number.

12042987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12042987 is a deficient number, since it is larger than the sum of its proper divisors (6505365).

12042987 is a wasteful number, since it uses less digits than its factorization.

12042987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21498.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 12042987 is about 3470.3007074316. The cubic root of 12042987 is about 229.2158995637.

The spelling of 12042987 in words is "twelve million, forty-two thousand, nine hundred eighty-seven".