40143140 has 24 divisors (see below), whose sum is σ = 87021312. Its totient is φ = 15539040.

The previous prime is 40143127. The next prime is 40143149. The reversal of 40143140 is 4134104.

It is a super-2 number, since 2×40143140² = 3222943378119200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40143149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31754 + ... + 32993.

It is an arithmetic number, because the mean of its divisors is an integer number (3625888).

Almost surely, 2^40143140 is an apocalyptic number.

It is an amenable number.

40143140 is an abundant number, since it is smaller than the sum of its proper divisors (46878172).

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

40143140 is a wasteful number, since it uses less digits than its factorization.

40143140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64787 (or 64785 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40143140 is about 6335.8614252523. The cubic root of 40143140 is about 342.4026469538.

Adding to 40143140 its reverse (4134104), we get a palindrome (44277244).

The spelling of 40143140 in words is "forty million, one hundred forty-three thousand, one hundred forty".