40240243242 has 12 divisors (see below), whose sum is σ = 87187193730. Its totient is φ = 13413414408.

The previous prime is 40240243237. The next prime is 40240243247. The reversal of 40240243242 is 24234204204.

It is an interprime number because it is at equal distance from previous prime (40240243237) and next prime (40240243247).

It can be written as a sum of positive squares in only one way, i.e., 38157324921 + 2082918321 = 195339^2 + 45639^2 .

It is not an unprimeable number, because it can be changed into a prime (40240243247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117784517 + ... + 1117784552.

Almost surely, 2^40240243242 is an apocalyptic number.

40240243242 is an abundant number, since it is smaller than the sum of its proper divisors (46946950488).

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

40240243242 is a wasteful number, since it uses less digits than its factorization.

40240243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235569077 (or 2235569074 counting only the distinct ones).

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

Adding to 40240243242 its reverse (24234204204), we get a palindrome (64474447446).

The spelling of 40240243242 in words is "forty billion, two hundred forty million, two hundred forty-three thousand, two hundred forty-two".