43426240 has 168 divisors, whose sum is σ = 123828048. Its totient is φ = 14376960.

The previous prime is 43426237. The next prime is 43426303. The reversal of 43426240 is 4262434.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 594844 + ... + 594916.

Almost surely, 2^43426240 is an apocalyptic number.

43426240 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 43426240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61914024).

43426240 is an abundant number, since it is smaller than the sum of its proper divisors (80401808).

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

43426240 is a wasteful number, since it uses less digits than its factorization.

43426240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 43426240 is about 6589.8588755754. The cubic root of 43426240 is about 351.4935899769.

Adding to 43426240 its reverse (4262434), we get a palindrome (47688674).

The spelling of 43426240 in words is "forty-three million, four hundred twenty-six thousand, two hundred forty".