4642181 has 2 divisors, whose sum is σ = 4642182. Its totient is φ = 4642180.

The previous prime is 4642171. The next prime is 4642199. The reversal of 4642181 is 1812464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 1985281 = 1630^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642181 - 2¹⁸ = 4380037 is a prime.

It is a super-2 number, since 2×4642181² = 43099688873522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4642181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4642171) 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, 2321090 + 2321091.

It is an arithmetic number, because the mean of its divisors is an integer number (2321091).

Almost surely, 2^4642181 is an apocalyptic number.

It is an amenable number.

4642181 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642181 is an equidigital number, since it uses as much as digits as its factorization.

4642181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 26.

The square root of 4642181 is about 2154.5721152934. The cubic root of 4642181 is about 166.8171472039.

The spelling of 4642181 in words is "four million, six hundred forty-two thousand, one hundred eighty-one".