40540012 has 12 divisors (see below), whose sum is σ = 72862720. Its totient is φ = 19722096.

The previous prime is 40540009. The next prime is 40540037. The reversal of 40540012 is 21004504.

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, 136812 + ... + 137107.

Almost surely, 2^40540012 is an apocalyptic number.

It is an amenable number.

40540012 is a deficient number, since it is larger than the sum of its proper divisors (32322708).

40540012 is a wasteful number, since it uses less digits than its factorization.

40540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273960 (or 273958 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40540012 is about 6367.1038942364. The cubic root of 40540012 is about 343.5273276575.

Adding to 40540012 its reverse (21004504), we get a palindrome (61544516).

The spelling of 40540012 in words is "forty million, five hundred forty thousand, twelve".