40243312242 has 128 divisors (see below), whose sum is σ = 106151731200. Its totient is φ = 11062424448.

The previous prime is 40243312229. The next prime is 40243312247. The reversal of 40243312242 is 24221334204.

40243312242 is a `hidden beast` number, since 4 + 0 + 2 + 433 + 1 + 224 + 2 = 666.

40243312242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (40243312247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1028998 + ... + 1067390.

It is an arithmetic number, because the mean of its divisors is an integer number (829310400).

Almost surely, 2^40243312242 is an apocalyptic number.

40243312242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40243312242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53075865600).

40243312242 is an abundant number, since it is smaller than the sum of its proper divisors (65908418958).

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

40243312242 is a wasteful number, since it uses less digits than its factorization.

40243312242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38517 (or 38511 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40243312242 its reverse (24221334204), we get a palindrome (64464646446).

The spelling of 40243312242 in words is "forty billion, two hundred forty-three million, three hundred twelve thousand, two hundred forty-two".