3420187 has 2 divisors, whose sum is σ = 3420188. Its totient is φ = 3420186.

The previous prime is 3420161. The next prime is 3420191. The reversal of 3420187 is 7810243.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3420187 - 2⁷ = 3420059 is a prime.

It is a super-2 number, since 2×3420187² = 23395358229938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3420107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710093 + 1710094.

It is an arithmetic number, because the mean of its divisors is an integer number (1710094).

Almost surely, 2^3420187 is an apocalyptic number.

3420187 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420187 is an equidigital number, since it uses as much as digits as its factorization.

3420187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 3420187 is about 1849.3747592092. The cubic root of 3420187 is about 150.6664714236. Note that the first 3 decimals are identical.

The spelling of 3420187 in words is "three million, four hundred twenty thousand, one hundred eighty-seven".