40344455442 has 8 divisors (see below), whose sum is σ = 80688910896. Its totient is φ = 13448151812.

The previous prime is 40344455399. The next prime is 40344455447. The reversal of 40344455442 is 24455444304.

It is a sphenic number, since it is the product of 3 distinct primes.

40344455442 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 40344455442.

It is not an unprimeable number, because it can be changed into a prime (40344455447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3362037948 + ... + 3362037959.

It is an arithmetic number, because the mean of its divisors is an integer number (10086113862).

Almost surely, 2^40344455442 is an apocalyptic number.

40344455442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40344455442 is a wasteful number, since it uses less digits than its factorization.

40344455442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724075912.

The product of its (nonzero) digits is 614400, while the sum is 39.

Adding to 40344455442 its reverse (24455444304), we get a palindrome (64799899746).

The spelling of 40344455442 in words is "forty billion, three hundred forty-four million, four hundred fifty-five thousand, four hundred forty-two".