40540146 has 8 divisors (see below), whose sum is σ = 81080304. Its totient is φ = 13513380.

The previous prime is 40540141. The next prime is 40540147. The reversal of 40540146 is 64104504.

It is a sphenic number, since it is the product of 3 distinct primes.

40540146 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40540141) 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, 3378340 + ... + 3378351.

It is an arithmetic number, because the mean of its divisors is an integer number (10135038).

Almost surely, 2^40540146 is an apocalyptic number.

40540146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40540146 is a wasteful number, since it uses less digits than its factorization.

40540146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756696.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 40540146 is about 6367.1144170652. The cubic root of 40540146 is about 343.5277061528.

The spelling of 40540146 in words is "forty million, five hundred forty thousand, one hundred forty-six".