421144632 has 24 divisors (see below), whose sum is σ = 1140600240. Its totient is φ = 140381520.

The previous prime is 421144631. The next prime is 421144637. The reversal of 421144632 is 236441124.

It is a happy number.

421144632 is a `hidden beast` number, since 4 + 21 + 1 + 4 + 4 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 421144596 and 421144605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421144631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2924544 + ... + 2924687.

It is an arithmetic number, because the mean of its divisors is an integer number (47525010).

Almost surely, 2^421144632 is an apocalyptic number.

It is an amenable number.

421144632 is an abundant number, since it is smaller than the sum of its proper divisors (719455608).

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

421144632 is a wasteful number, since it uses less digits than its factorization.

421144632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5849243 (or 5849236 counting only the distinct ones).

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

The square root of 421144632 is about 20521.8086922181. The cubic root of 421144632 is about 749.5669393261.

Adding to 421144632 its reverse (236441124), we get a palindrome (657585756).

The spelling of 421144632 in words is "four hundred twenty-one million, one hundred forty-four thousand, six hundred thirty-two".