43240430040 has 32 divisors (see below), whose sum is σ = 129721290480. Its totient is φ = 11530781312.

The previous prime is 43240430021. The next prime is 43240430041. The reversal of 43240430040 is 4003404234.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43240430041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180168339 + ... + 180168578.

Almost surely, 2^43240430040 is an apocalyptic number.

43240430040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43240430040 is an abundant number, since it is smaller than the sum of its proper divisors (86480860440).

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

43240430040 is a wasteful number, since it uses less digits than its factorization.

43240430040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360336931 (or 360336927 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 43240430040 its reverse (4003404234), we get a palindrome (47243834274).

The spelling of 43240430040 in words is "forty-three billion, two hundred forty million, four hundred thirty thousand, forty".