12187042 has 16 divisors (see below), whose sum is σ = 20970432. Its totient is φ = 5203440.

The previous prime is 12187013. The next prime is 12187051. The reversal of 12187042 is 24078121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12186998 and 12187016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2617 + ... + 5587.

It is an arithmetic number, because the mean of its divisors is an integer number (1310652).

Almost surely, 2^12187042 is an apocalyptic number.

12187042 is a deficient number, since it is larger than the sum of its proper divisors (8783390).

12187042 is a wasteful number, since it uses less digits than its factorization.

12187042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 12187042 is about 3490.9944142035. The cubic root of 12187042 is about 230.1262193156.

The spelling of 12187042 in words is "twelve million, one hundred eighty-seven thousand, forty-two".