43540136 has 32 divisors (see below), whose sum is σ = 86070600. Its totient is φ = 20616960.

The previous prime is 43540103. The next prime is 43540141. The reversal of 43540136 is 63104534.

It can be written as a sum of positive squares in 4 ways, for example, as 39564100 + 3976036 = 6290^2 + 1994^2 .

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, 10526 + ... + 14066.

Almost surely, 2^43540136 is an apocalyptic number.

It is an amenable number.

43540136 is a deficient number, since it is larger than the sum of its proper divisors (42530464).

43540136 is a wasteful number, since it uses less digits than its factorization.

43540136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629 (or 3625 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 43540136 is about 6598.4949799178. The cubic root of 43540136 is about 351.8006145271.

The spelling of 43540136 in words is "forty-three million, five hundred forty thousand, one hundred thirty-six".