40013012 has 24 divisors (see below), whose sum is σ = 79380000. Its totient is φ = 17495136.

The previous prime is 40012969. The next prime is 40013023. The reversal of 40013012 is 21031004.

It is a happy number.

It is a super-2 number, since 2×40013012² = 3202082258624288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40012984 and 40013002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19262 + ... + 21237.

It is an arithmetic number, because the mean of its divisors is an integer number (3307500).

Almost surely, 2^40013012 is an apocalyptic number.

It is an amenable number.

40013012 is a deficient number, since it is larger than the sum of its proper divisors (39366988).

40013012 is a wasteful number, since it uses less digits than its factorization.

40013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40535 (or 40533 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 40013012 is about 6325.5839256151. The cubic root of 40013012 is about 342.0322689933.

Adding to 40013012 its reverse (21031004), we get a palindrome (61044016).

The spelling of 40013012 in words is "forty million, thirteen thousand, twelve".