40143544 has 24 divisors (see below), whose sum is σ = 87558840. Its totient is φ = 17204208.

The previous prime is 40143491. The next prime is 40143563. The reversal of 40143544 is 44534104.

It is a super-2 number, since 2×40143544² = 3223008249759872, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 50812 + ... + 51595.

It is an arithmetic number, because the mean of its divisors is an integer number (3648285).

Almost surely, 2^40143544 is an apocalyptic number.

It is an amenable number.

40143544 is an abundant number, since it is smaller than the sum of its proper divisors (47415296).

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

40143544 is a wasteful number, since it uses less digits than its factorization.

40143544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102427 (or 102416 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 40143544 is about 6335.8933071825. The cubic root of 40143544 is about 342.4037955951.

Adding to 40143544 its reverse (44534104), we get a palindrome (84677648).

The spelling of 40143544 in words is "forty million, one hundred forty-three thousand, five hundred forty-four".