40440223242 has 16 divisors (see below), whose sum is σ = 89867162880. Its totient is φ = 13480074396.

The previous prime is 40440223193. The next prime is 40440223249. The reversal of 40440223242 is 24232204404.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (40440223249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374446458 + ... + 374446565.

It is an arithmetic number, because the mean of its divisors is an integer number (5616697680).

Almost surely, 2^40440223242 is an apocalyptic number.

40440223242 is an abundant number, since it is smaller than the sum of its proper divisors (49426939638).

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

40440223242 is a wasteful number, since it uses less digits than its factorization.

40440223242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748893034 (or 748893028 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 40440223242 its reverse (24232204404), we get a palindrome (64672427646).

The spelling of 40440223242 in words is "forty billion, four hundred forty million, two hundred twenty-three thousand, two hundred forty-two".