201418423 has 2 divisors, whose sum is σ = 201418424. Its totient is φ = 201418422.

The previous prime is 201418387. The next prime is 201418517. The reversal of 201418423 is 324814102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201418423 is a prime.

It is a super-2 number, since 2×201418423² = 81138762247613858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201418223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100709211 + 100709212.

It is an arithmetic number, because the mean of its divisors is an integer number (100709212).

Almost surely, 2^201418423 is an apocalyptic number.

201418423 is a deficient number, since it is larger than the sum of its proper divisors (1).

201418423 is an equidigital number, since it uses as much as digits as its factorization.

201418423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 201418423 is about 14192.1958484232. The cubic root of 201418423 is about 586.1827901850.

The spelling of 201418423 in words is "two hundred one million, four hundred eighteen thousand, four hundred twenty-three".