420144111 has 16 divisors (see below), whose sum is σ = 626169600. Its totient is φ = 278415864.

The previous prime is 420144071. The next prime is 420144113. The reversal of 420144111 is 111441024.

It is not a de Polignac number, because 420144111 - 2¹⁵ = 420111343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420144113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42081 + ... + 51098.

It is an arithmetic number, because the mean of its divisors is an integer number (39135600).

Almost surely, 2^420144111 is an apocalyptic number.

420144111 is a deficient number, since it is larger than the sum of its proper divisors (206025489).

420144111 is a wasteful number, since it uses less digits than its factorization.

420144111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93355 (or 93349 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 420144111 is about 20497.4171787569. The cubic root of 420144111 is about 748.9728820136.

Adding to 420144111 its reverse (111441024), we get a palindrome (531585135).

The spelling of 420144111 in words is "four hundred twenty million, one hundred forty-four thousand, one hundred eleven".