421563142 has 128 divisors (see below), whose sum is σ = 894136320. Its totient is φ = 143821440.

The previous prime is 421563137. The next prime is 421563143. The reversal of 421563142 is 241365124.

It is a self number, because there is not a number n which added to its sum of digits gives 421563142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421563143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5079033 + ... + 5079115.

It is an arithmetic number, because the mean of its divisors is an integer number (6985440).

Almost surely, 2^421563142 is an apocalyptic number.

421563142 is an abundant number, since it is smaller than the sum of its proper divisors (472573178).

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

421563142 is a wasteful number, since it uses less digits than its factorization.

421563142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218.

The product of its digits is 5760, while the sum is 28.

The square root of 421563142 is about 20532.0028735630. The cubic root of 421563142 is about 749.8151497035.

The spelling of 421563142 in words is "four hundred twenty-one million, five hundred sixty-three thousand, one hundred forty-two".