421124240 has 40 divisors (see below), whose sum is σ = 985379640. Its totient is φ = 167371776.

The previous prime is 421124191. The next prime is 421124251. The reversal of 421124240 is 42421124.

421124240 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30824704 + 390299536 = 5552^2 + 19756^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4205 + ... + 29324.

It is an arithmetic number, because the mean of its divisors is an integer number (24634491).

Almost surely, 2^421124240 is an apocalyptic number.

421124240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421124240 is an abundant number, since it is smaller than the sum of its proper divisors (564255400).

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

421124240 is a wasteful number, since it uses less digits than its factorization.

421124240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33699 (or 33693 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 421124240 is about 20521.3118489048. The cubic root of 421124240 is about 749.5548410154.

Adding to 421124240 its reverse (42421124), we get a palindrome (463545364).

The spelling of 421124240 in words is "four hundred twenty-one million, one hundred twenty-four thousand, two hundred forty".