40124212 has 6 divisors (see below), whose sum is σ = 70217378. Its totient is φ = 20062104.

The previous prime is 40124207. The next prime is 40124221. The reversal of 40124212 is 21242104.

40124212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 21771556 + 18352656 = 4666^2 + 4284^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5015523 + ... + 5015530.

Almost surely, 2^40124212 is an apocalyptic number.

It is an amenable number.

40124212 is a deficient number, since it is larger than the sum of its proper divisors (30093166).

40124212 is a wasteful number, since it uses less digits than its factorization.

40124212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10031057 (or 10031055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40124212 is about 6334.3675295960. The cubic root of 40124212 is about 342.3488227621.

Adding to 40124212 its reverse (21242104), we get a palindrome (61366316).

The spelling of 40124212 in words is "forty million, one hundred twenty-four thousand, two hundred twelve".