40143500 has 24 divisors (see below), whose sum is σ = 87674496. Its totient is φ = 16057200.

The previous prime is 40143491. The next prime is 40143563. The reversal of 40143500 is 534104.

It is a super-2 number, since 2×40143500² = 3223001184500000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39644 + ... + 40643.

It is an arithmetic number, because the mean of its divisors is an integer number (3653104).

Almost surely, 2^40143500 is an apocalyptic number.

It is an amenable number.

40143500 is an abundant number, since it is smaller than the sum of its proper divisors (47530996).

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

40143500 is a wasteful number, since it uses less digits than its factorization.

40143500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80306 (or 80294 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 40143500 is about 6335.8898349009. The cubic root of 40143500 is about 342.4036704959.

Adding to 40143500 its reverse (534104), we get a palindrome (40677604).

The spelling of 40143500 in words is "forty million, one hundred forty-three thousand, five hundred".