421143248 has 30 divisors (see below), whose sum is σ = 853001394. Its totient is φ = 201412288.

The previous prime is 421143241. The next prime is 421143253. The reversal of 421143248 is 842341124.

It can be written as a sum of positive squares in only one way, i.e., 233233984 + 187909264 = 15272^2 + 13708^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 421143248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421143241) 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, 16415 + ... + 33342.

Almost surely, 2^421143248 is an apocalyptic number.

It is an amenable number.

421143248 is an abundant number, since it is smaller than the sum of its proper divisors (431858146).

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

421143248 is a wasteful number, since it uses less digits than its factorization.

421143248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49811 (or 49782 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 421143248 is about 20521.7749719658. The cubic root of 421143248 is about 749.5661182291.

The spelling of 421143248 in words is "four hundred twenty-one million, one hundred forty-three thousand, two hundred forty-eight".