40240342144 has 16 divisors (see below), whose sum is σ = 80166306870. Its totient is φ = 20120171008.

The previous prime is 40240342141. The next prime is 40240342183. The reversal of 40240342144 is 44124304204.

It can be written as a sum of positive squares in only one way, i.e., 29818382400 + 10421959744 = 172680^2 + 102088^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (40240342141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157188709 + ... + 157188964.

Almost surely, 2^40240342144 is an apocalyptic number.

It is an amenable number.

40240342144 is a deficient number, since it is larger than the sum of its proper divisors (39925964726).

40240342144 is an equidigital number, since it uses as much as digits as its factorization.

40240342144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314377687 (or 314377675 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 40240342144 its reverse (44124304204), we get a palindrome (84364646348).

The spelling of 40240342144 in words is "forty billion, two hundred forty million, three hundred forty-two thousand, one hundred forty-four".