40212440242 has 8 divisors (see below), whose sum is σ = 64958557356. Its totient is φ = 18559587792.

The previous prime is 40212440231. The next prime is 40212440291. The reversal of 40212440242 is 24204421204.

It can be written as a sum of positive squares in 2 ways, for example, as 32577001081 + 7635439161 = 180491^2 + 87381^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 773316133 + ... + 773316184.

Almost surely, 2^40212440242 is an apocalyptic number.

40212440242 is a deficient number, since it is larger than the sum of its proper divisors (24746117114).

40212440242 is a wasteful number, since it uses less digits than its factorization.

40212440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546632332.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 40212440242 its reverse (24204421204), we get a palindrome (64416861446).

The spelling of 40212440242 in words is "forty billion, two hundred twelve million, four hundred forty thousand, two hundred forty-two".