40143224 has 32 divisors (see below), whose sum is σ = 84337200. Its totient is φ = 17752320.

The previous prime is 40143197. The next prime is 40143227. The reversal of 40143224 is 42234104.

It is a super-2 number, since 2×40143224² = 3222956866228352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40143196 and 40143205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40143227) 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 7 ways as a sum of consecutive naturals, for example, 2909 + ... + 9420.

Almost surely, 2^40143224 is an apocalyptic number.

40143224 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40143224 is an abundant number, since it is smaller than the sum of its proper divisors (44193976).

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

40143224 is a wasteful number, since it uses less digits than its factorization.

40143224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12383 (or 12379 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 40143224 is about 6335.8680541817. The cubic root of 40143224 is about 342.4028857808.

Adding to 40143224 its reverse (42234104), we get a palindrome (82377328).

The spelling of 40143224 in words is "forty million, one hundred forty-three thousand, two hundred twenty-four".