8742187 has 2 divisors, whose sum is σ = 8742188. Its totient is φ = 8742186.

The previous prime is 8742169. The next prime is 8742193. The reversal of 8742187 is 7812478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8742187 - 2⁷ = 8742059 is a prime.

8742187 is a lucky number.

It is equal to p₅₈₆₃₇₈ and since 8742187 and 586378 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (8742157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4371093 + 4371094.

It is an arithmetic number, because the mean of its divisors is an integer number (4371094).

Almost surely, 2^8742187 is an apocalyptic number.

8742187 is a deficient number, since it is larger than the sum of its proper divisors (1).

8742187 is an equidigital number, since it uses as much as digits as its factorization.

8742187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25088, while the sum is 37.

The square root of 8742187 is about 2956.7189585755. The cubic root of 8742187 is about 206.0029141511.

It can be divided in two parts, 874218 and 7, that added together give a square (874225 = 935²).

The spelling of 8742187 in words is "eight million, seven hundred forty-two thousand, one hundred eighty-seven".