421133140 has 48 divisors (see below), whose sum is σ = 935230464. Its totient is φ = 159033600.

The previous prime is 421133107. The next prime is 421133147. The reversal of 421133140 is 41331124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421133147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17137 + ... + 33703.

It is an arithmetic number, because the mean of its divisors is an integer number (19483968).

Almost surely, 2^421133140 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 421133140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467615232).

421133140 is an abundant number, since it is smaller than the sum of its proper divisors (514097324).

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

421133140 is a wasteful number, since it uses less digits than its factorization.

421133140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16648 (or 16646 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 421133140 is about 20521.5286954944. The cubic root of 421133140 is about 749.5601213187.

Adding to 421133140 its reverse (41331124), we get a palindrome (462464264).

The spelling of 421133140 in words is "four hundred twenty-one million, one hundred thirty-three thousand, one hundred forty".