421140384 has 168 divisors, whose sum is σ = 1421249760. Its totient is φ = 120279168.

The previous prime is 421140383. The next prime is 421140413. The reversal of 421140384 is 483041124.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (421140383) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 162007 + ... + 164585.

It is an arithmetic number, because the mean of its divisors is an integer number (8459820).

Almost surely, 2^421140384 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 421140384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710624880).

421140384 is an abundant number, since it is smaller than the sum of its proper divisors (1000109376).

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

421140384 is an equidigital number, since it uses as much as digits as its factorization.

421140384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614 (or 2591 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 421140384 is about 20521.7051923080. The cubic root of 421140384 is about 749.5644190747.

The spelling of 421140384 in words is "four hundred twenty-one million, one hundred forty thousand, three hundred eighty-four".