200421021430143 has 20 divisors (see below), whose sum is σ = 299525621372208. Its totient is φ = 133555437217440.

The previous prime is 200421021430027. The next prime is 200421021430153. The reversal of 200421021430143 is 341034120124002.

200421021430143 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 210 + 2 + 1 + 430 + 14 + 3 = 666.

It is not a de Polignac number, because 200421021430143 - 2²¹ = 200421019332991 is a prime.

It is a super-2 number, since 2×200421021430143² (a number of 29 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 (200421021430153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 542194371 + ... + 542563892.

Almost surely, 2^{200421021430143} is an apocalyptic number.

200421021430143 is a deficient number, since it is larger than the sum of its proper divisors (99104599942065).

200421021430143 is a wasteful number, since it uses less digits than its factorization.

200421021430143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084760556 (or 1084760547 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 200421021430143 its reverse (341034120124002), we get a palindrome (541455141554145).

The spelling of 200421021430143 in words is "two hundred trillion, four hundred twenty-one billion, twenty-one million, four hundred thirty thousand, one hundred forty-three".