43040442140 has 24 divisors (see below), whose sum is σ = 90444809952. Its totient is φ = 17204770880.

The previous prime is 43040442131. The next prime is 43040442157. The reversal of 43040442140 is 4124404034.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681899 + ... + 742338.

It is an arithmetic number, because the mean of its divisors is an integer number (3768533748).

Almost surely, 2^43040442140 is an apocalyptic number.

It is an amenable number.

43040442140 is an abundant number, since it is smaller than the sum of its proper divisors (47404367812).

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

43040442140 is a wasteful number, since it uses less digits than its factorization.

43040442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425757 (or 1425755 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 43040442140 its reverse (4124404034), we get a palindrome (47164846174).

The spelling of 43040442140 in words is "forty-three billion, forty million, four hundred forty-two thousand, one hundred forty".