140838129 has 8 divisors (see below), whose sum is σ = 208649120. Its totient is φ = 93892068.

The previous prime is 140838121. The next prime is 140838151. The reversal of 140838129 is 921838041.

It is not a de Polignac number, because 140838129 - 2³ = 140838121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140838093 and 140838102.

It is not an unprimeable number, because it can be changed into a prime (140838121) 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, 2608087 + ... + 2608140.

It is an arithmetic number, because the mean of its divisors is an integer number (26081140).

Almost surely, 2^140838129 is an apocalyptic number.

It is an amenable number.

140838129 is a deficient number, since it is larger than the sum of its proper divisors (67810991).

140838129 is an equidigital number, since it uses as much as digits as its factorization.

140838129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5216236 (or 5216230 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 140838129 is about 11867.5241310056. The cubic root of 140838129 is about 520.2835349674.

The spelling of 140838129 in words is "one hundred forty million, eight hundred thirty-eight thousand, one hundred twenty-nine".