421426143 has 12 divisors (see below), whose sum is σ = 611819208. Its totient is φ = 279523440.

The previous prime is 421426133. The next prime is 421426157. The reversal of 421426143 is 341624124.

It is a happy number.

421426143 is a `hidden beast` number, since 4 + 2 + 1 + 42 + 614 + 3 = 666.

It is not a de Polignac number, because 421426143 - 2¹⁰ = 421425119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421426133) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 117073 + ... + 120618.

It is an arithmetic number, because the mean of its divisors is an integer number (50984934).

Almost surely, 2^421426143 is an apocalyptic number.

421426143 is a deficient number, since it is larger than the sum of its proper divisors (190393065).

421426143 is a wasteful number, since it uses less digits than its factorization.

421426143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237894 (or 237891 counting only the distinct ones).

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

The square root of 421426143 is about 20528.6663716862. Note that the first 3 decimals coincide. The cubic root of 421426143 is about 749.7339162771.

The spelling of 421426143 in words is "four hundred twenty-one million, four hundred twenty-six thousand, one hundred forty-three".