201420434443 has 32 divisors (see below), whose sum is σ = 218547383040. Its totient is φ = 185007882240.

The previous prime is 201420434437. The next prime is 201420434459. The reversal of 201420434443 is 344434024102.

It is a de Polignac number, because none of the positive numbers 2^k-201420434443 is a prime.

It is a super-2 number, since 2×201420434443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201420434483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112713396 + ... + 112715182.

It is an arithmetic number, because the mean of its divisors is an integer number (6829605720).

Almost surely, 2^201420434443 is an apocalyptic number.

201420434443 is a deficient number, since it is larger than the sum of its proper divisors (17126948597).

201420434443 is a wasteful number, since it uses less digits than its factorization.

201420434443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 201420434443 its reverse (344434024102), we get a palindrome (545854458545).

The spelling of 201420434443 in words is "two hundred one billion, four hundred twenty million, four hundred thirty-four thousand, four hundred forty-three".