421340043124 has 96 divisors (see below), whose sum is σ = 998763929856. Its totient is φ = 150189742080.

The previous prime is 421340043073. The next prime is 421340043127.

421340043124 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 421340043092 and 421340043101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421340043127) 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, 13167 + ... + 918070.

It is an arithmetic number, because the mean of its divisors is an integer number (10403790936).

Almost surely, 2^421340043124 is an apocalyptic number.

421340043124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421340043124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499381964928).

421340043124 is an abundant number, since it is smaller than the sum of its proper divisors (577423886732).

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

421340043124 is a wasteful number, since it uses less digits than its factorization.

421340043124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931385 (or 931383 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

It can be divided in two parts, 4213400 and 43124, that added together give a palindrome (4256524).

The spelling of 421340043124 in words is "four hundred twenty-one billion, three hundred forty million, forty-three thousand, one hundred twenty-four".