426544140 has 96 divisors (see below), whose sum is σ = 1338188544. Its totient is φ = 100604160.

The previous prime is 426544081. The next prime is 426544169. The reversal of 426544140 is 41445624.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 426544098 and 426544107.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15687 + ... + 33153.

It is an arithmetic number, because the mean of its divisors is an integer number (13939464).

Almost surely, 2^426544140 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 426544140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669094272).

426544140 is an abundant number, since it is smaller than the sum of its proper divisors (911644404).

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

426544140 is a wasteful number, since it uses less digits than its factorization.

426544140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17527 (or 17525 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 426544140 is about 20652.9450684400. The cubic root of 426544140 is about 752.7567524506.

Adding to 426544140 its reverse (41445624), we get a palindrome (467989764).

The spelling of 426544140 in words is "four hundred twenty-six million, five hundred forty-four thousand, one hundred forty".