43540146 has 64 divisors (see below), whose sum is σ = 105100800. Its totient is φ = 13360464.

The previous prime is 43540141. The next prime is 43540163. The reversal of 43540146 is 64104534.

43540146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (43540141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118455 + ... + 118821.

It is an arithmetic number, because the mean of its divisors is an integer number (1642200).

Almost surely, 2^43540146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43540146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52550400).

43540146 is an abundant number, since it is smaller than the sum of its proper divisors (61560654).

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

43540146 is a wasteful number, since it uses less digits than its factorization.

43540146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 43540146 is about 6598.4957376663. The cubic root of 43540146 is about 351.8006414602.

The spelling of 43540146 in words is "forty-three million, five hundred forty thousand, one hundred forty-six".