420201111144 has 32 divisors (see below), whose sum is σ = 1096176813120. Its totient is φ = 133977165696.

The previous prime is 420201111017. The next prime is 420201111163. The reversal of 420201111144 is 441111102024.

It is a super-3 number, since 3×420201111144³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420201111144.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380616397 + ... + 380617500.

It is an arithmetic number, because the mean of its divisors is an integer number (34255525410).

Almost surely, 2^420201111144 is an apocalyptic number.

It is an amenable number.

420201111144 is an abundant number, since it is smaller than the sum of its proper divisors (675975701976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420201111144 is a wasteful number, since it uses less digits than its factorization.

420201111144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761233929 (or 761233925 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 420201111144 its reverse (441111102024), we get a palindrome (861312213168).

The spelling of 420201111144 in words is "four hundred twenty billion, two hundred one million, one hundred eleven thousand, one hundred forty-four".