40143006 has 32 divisors (see below), whose sum is σ = 89490720. Its totient is φ = 13338432.

The previous prime is 40142987. The next prime is 40143007. The reversal of 40143006 is 60034104.

It is a super-2 number, since 2×40143006² = 3222921861432072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 40143006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19146 + ... + 21138.

It is an arithmetic number, because the mean of its divisors is an integer number (2796585).

Almost surely, 2^40143006 is an apocalyptic number.

40143006 is an abundant number, since it is smaller than the sum of its proper divisors (49347714).

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

40143006 is a wasteful number, since it uses less digits than its factorization.

40143006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40143006 is about 6335.8508505172. The cubic root of 40143006 is about 342.4022659671.

The spelling of 40143006 in words is "forty million, one hundred forty-three thousand, six".