40143012 has 48 divisors (see below), whose sum is σ = 115285632. Its totient is φ = 10586880.

The previous prime is 40143011. The next prime is 40143017. The reversal of 40143012 is 21034104.

It is a super-3 number, since 3×40143012³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 40142982 and 40143000.

It is not an unprimeable number, because it can be changed into a prime (40143011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17289 + ... + 19472.

It is an arithmetic number, because the mean of its divisors is an integer number (2401784).

Almost surely, 2^40143012 is an apocalyptic number.

40143012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40143012 is an abundant number, since it is smaller than the sum of its proper divisors (75142620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40143012 is a wasteful number, since it uses less digits than its factorization.

40143012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36788 (or 36786 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40143012 is about 6335.8513240132. The cubic root of 40143012 is about 342.4022830262.

Adding to 40143012 its reverse (21034104), we get a palindrome (61177116).

The spelling of 40143012 in words is "forty million, one hundred forty-three thousand, twelve".