421043130 has 64 divisors (see below), whose sum is σ = 1144005120. Its totient is φ = 110155968.

The previous prime is 421043123. The next prime is 421043137. The reversal of 421043130 is 31340124.

It is an interprime number because it is at equal distance from previous prime (421043123) and next prime (421043137).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (421043137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402 + ... + 29021.

It is an arithmetic number, because the mean of its divisors is an integer number (17875080).

Almost surely, 2^421043130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421043130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572002560).

421043130 is an abundant number, since it is smaller than the sum of its proper divisors (722961990).

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

421043130 is a wasteful number, since it uses less digits than its factorization.

421043130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492 (or 29486 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 421043130 is about 20519.3355155570. The cubic root of 421043130 is about 749.5067156318.

Adding to 421043130 its reverse (31340124), we get a palindrome (452383254).

The spelling of 421043130 in words is "four hundred twenty-one million, forty-three thousand, one hundred thirty".