40115212 has 6 divisors (see below), whose sum is σ = 70201628. Its totient is φ = 20057604.

The previous prime is 40115203. The next prime is 40115219. The reversal of 40115212 is 21251104.

It is not an unprimeable number, because it can be changed into a prime (40115219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5014398 + ... + 5014405.

Almost surely, 2^40115212 is an apocalyptic number.

It is an amenable number.

40115212 is a deficient number, since it is larger than the sum of its proper divisors (30086416).

40115212 is a wasteful number, since it uses less digits than its factorization.

40115212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10028807 (or 10028805 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 40115212 is about 6333.6570794447. The cubic root of 40115212 is about 342.3232241717.

Adding to 40115212 its reverse (21251104), we get a palindrome (61366316).

The spelling of 40115212 in words is "forty million, one hundred fifteen thousand, two hundred twelve".