140138140 has 24 divisors (see below), whose sum is σ = 311602032. Its totient is φ = 52757760.

The previous prime is 140138107. The next prime is 140138143. The reversal of 140138140 is 41831041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140138143) 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, 205746 + ... + 206425.

It is an arithmetic number, because the mean of its divisors is an integer number (12983418).

Almost surely, 2^140138140 is an apocalyptic number.

140138140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140138140 is an abundant number, since it is smaller than the sum of its proper divisors (171463892).

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

140138140 is a wasteful number, since it uses less digits than its factorization.

140138140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412197 (or 412195 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 140138140 is about 11837.9956073653. The cubic root of 140138140 is about 519.4201376480.

Adding to 140138140 its reverse (41831041), we get a palindrome (181969181).

The spelling of 140138140 in words is "one hundred forty million, one hundred thirty-eight thousand, one hundred forty".