421049268 has 72 divisors (see below), whose sum is σ = 1131733512. Its totient is φ = 131530752.

The previous prime is 421049261. The next prime is 421049273. The reversal of 421049268 is 862940124.

It can be written as a sum of positive squares in 4 ways, for example, as 113678244 + 307371024 = 10662^2 + 17532^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421049261) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155946 + ... + 158622.

It is an arithmetic number, because the mean of its divisors is an integer number (15718521).

Almost surely, 2^421049268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421049268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565866756).

421049268 is an abundant number, since it is smaller than the sum of its proper divisors (710684244).

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

421049268 is a wasteful number, since it uses less digits than its factorization.

421049268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 421049268 is about 20519.4850812587. The cubic root of 421049268 is about 749.5103577368.

The spelling of 421049268 in words is "four hundred twenty-one million, forty-nine thousand, two hundred sixty-eight".