423113020440 has 256 divisors, whose sum is σ = 1446986695680. Its totient is φ = 97974159360.

The previous prime is 423113020427. The next prime is 423113020453. The reversal of 423113020440 is 44020311324.

It is an interprime number because it is at equal distance from previous prime (423113020427) and next prime (423113020453).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 423113020440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22244374 + ... + 22263386.

It is an arithmetic number, because the mean of its divisors is an integer number (5652291780).

Almost surely, 2^423113020440 is an apocalyptic number.

423113020440 is a gapful number since it is divisible by the number (40) 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 423113020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723493347840).

423113020440 is an abundant number, since it is smaller than the sum of its proper divisors (1023873675240).

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

423113020440 is a wasteful number, since it uses less digits than its factorization.

423113020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19794 (or 19790 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 423113020440 its reverse (44020311324), we get a palindrome (467133331764).

The spelling of 423113020440 in words is "four hundred twenty-three billion, one hundred thirteen million, twenty thousand, four hundred forty".