4218061 has 2 divisors, whose sum is σ = 4218062. Its totient is φ = 4218060.

The previous prime is 4218031. The next prime is 4218103. The reversal of 4218061 is 1608124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3632836 + 585225 = 1906^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 4218061 - 2¹³ = 4209869 is a prime.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 4218061 parts by 2904 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4218001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2109030 + 2109031.

It is an arithmetic number, because the mean of its divisors is an integer number (2109031).

Almost surely, 2^4218061 is an apocalyptic number.

It is an amenable number.

4218061 is a deficient number, since it is larger than the sum of its proper divisors (1).

4218061 is an equidigital number, since it uses as much as digits as its factorization.

4218061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 4218061 is about 2053.7918589770. The cubic root of 4218061 is about 161.5738047964.

The spelling of 4218061 in words is "four million, two hundred eighteen thousand, sixty-one".