201043443420 has 120 divisors (see below), whose sum is σ = 646063398288. Its totient is φ = 52303968000.

The previous prime is 201043443361. The next prime is 201043443427. The reversal of 201043443420 is 24344340102.

It is a happy number.

201043443420 is a `hidden beast` number, since 201 + 0 + 4 + 3 + 4 + 434 + 20 = 666.

It is a super-2 number, since 2×201043443420² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201043443427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1447006 + ... + 1579845.

Almost surely, 2^201043443420 is an apocalyptic number.

201043443420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201043443420 is an abundant number, since it is smaller than the sum of its proper divisors (445019954868).

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

201043443420 is a wasteful number, since it uses less digits than its factorization.

201043443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026913 (or 3026902 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 201043443420 its reverse (24344340102), we get a palindrome (225387783522).

The spelling of 201043443420 in words is "two hundred one billion, forty-three million, four hundred forty-three thousand, four hundred twenty".