40143044 has 12 divisors (see below), whose sum is σ = 70376124. Its totient is φ = 20035584.

The previous prime is 40143041. The next prime is 40143079. The reversal of 40143044 is 44034104.

It can be written as a sum of positive squares in 2 ways, for example, as 27962944 + 12180100 = 5288^2 + 3490^2 .

It is a super-2 number, since 2×40143044² = 3222927963171872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6389 + ... + 11004.

It is an arithmetic number, because the mean of its divisors is an integer number (5864677).

Almost surely, 2^40143044 is an apocalyptic number.

It is an amenable number.

40143044 is a deficient number, since it is larger than the sum of its proper divisors (30233080).

40143044 is a wasteful number, since it uses less digits than its factorization.

40143044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17974 (or 17972 counting only the distinct ones).

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

The square root of 40143044 is about 6335.8538493245. The cubic root of 40143044 is about 342.4023740082.

Adding to 40143044 its reverse (44034104), we get a palindrome (84177148).

The spelling of 40143044 in words is "forty million, one hundred forty-three thousand, forty-four".