12492187 has 2 divisors, whose sum is σ = 12492188. Its totient is φ = 12492186.

The previous prime is 12492173. The next prime is 12492209. The reversal of 12492187 is 78129421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12492187 is a prime.

It is a zygodrome in base 5.

It is not a weakly prime, because it can be changed into another prime (12492107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6246093 + 6246094.

It is an arithmetic number, because the mean of its divisors is an integer number (6246094).

Almost surely, 2^12492187 is an apocalyptic number.

12492187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12492187 is an equidigital number, since it uses as much as digits as its factorization.

12492187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 12492187 is about 3534.4288081669. The cubic root of 12492187 is about 232.0310786249.

The spelling of 12492187 in words is "twelve million, four hundred ninety-two thousand, one hundred eighty-seven".