40182139 has 6 divisors (see below), whose sum is σ = 41616380. Its totient is φ = 38795736.

The previous prime is 40182119. The next prime is 40182151. The reversal of 40182139 is 93128104.

It is a happy number.

40182139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40182139 - 2⁹ = 40181627 is a prime.

It is a super-2 number, since 2×40182139² = 3229208589230642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40182119) 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 5 ways as a sum of consecutive naturals, for example, 23049 + ... + 24730.

Almost surely, 2^40182139 is an apocalyptic number.

40182139 is a deficient number, since it is larger than the sum of its proper divisors (1434241).

40182139 is an equidigital number, since it uses as much as digits as its factorization.

40182139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47837 (or 47808 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 40182139 is about 6338.9383180466. The cubic root of 40182139 is about 342.5134922847.

The spelling of 40182139 in words is "forty million, one hundred eighty-two thousand, one hundred thirty-nine".