40178139 has 8 divisors (see below), whose sum is σ = 55299072. Its totient is φ = 25921320.

The previous prime is 40178129. The next prime is 40178143. The reversal of 40178139 is 93187104.

40178139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40178139 - 2¹¹ = 40176091 is a prime.

It is a super-2 number, since 2×40178139² = 3228565707006642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40178129) 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 7 ways as a sum of consecutive naturals, for example, 215919 + ... + 216104.

It is an arithmetic number, because the mean of its divisors is an integer number (6912384).

Almost surely, 2^40178139 is an apocalyptic number.

40178139 is a deficient number, since it is larger than the sum of its proper divisors (15120933).

40178139 is a wasteful number, since it uses less digits than its factorization.

40178139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432057.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 40178139 is about 6338.6227999464. The cubic root of 40178139 is about 342.5021265430.

The spelling of 40178139 in words is "forty million, one hundred seventy-eight thousand, one hundred thirty-nine".