40212343154212 has 12 divisors (see below), whose sum is σ = 70382768886556. Its totient is φ = 20102980615200.

The previous prime is 40212343154209. The next prime is 40212343154231. The reversal of 40212343154212 is 21245134321204.

It can be written as a sum of positive squares in 2 ways, for example, as 8707315065856 + 31505028088356 = 2950816^2 + 5612934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797712123 + ... + 797762530.

Almost surely, 2^{40212343154212} is an apocalyptic number.

It is an amenable number.

40212343154212 is a deficient number, since it is larger than the sum of its proper divisors (30170425732344).

40212343154212 is a wasteful number, since it uses less digits than its factorization.

40212343154212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595480958 (or 1595480956 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 40212343154212 its reverse (21245134321204), we get a palindrome (61457477475416).

The spelling of 40212343154212 in words is "forty trillion, two hundred twelve billion, three hundred forty-three million, one hundred fifty-four thousand, two hundred twelve".