140004138 has 16 divisors (see below), whose sum is σ = 284188320. Its totient is φ = 45971376.

The previous prime is 140004131. The next prime is 140004143. The reversal of 140004138 is 831400041.

140004138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (140004131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173733 + ... + 174536.

It is an arithmetic number, because the mean of its divisors is an integer number (17761770).

Almost surely, 2^140004138 is an apocalyptic number.

140004138 is an abundant number, since it is smaller than the sum of its proper divisors (144184182).

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

140004138 is a wasteful number, since it uses less digits than its factorization.

140004138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348341.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 140004138 is about 11832.3344273224. The cubic root of 140004138 is about 519.2545259777.

Adding to 140004138 its reverse (831400041), we get a palindrome (971404179).

The spelling of 140004138 in words is "one hundred forty million, four thousand, one hundred thirty-eight".