140138712 has 96 divisors (see below), whose sum is σ = 438216480. Its totient is φ = 39628800.

The previous prime is 140138681. The next prime is 140138717. The reversal of 140138712 is 217831041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140138717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49528 + ... + 52280.

It is an arithmetic number, because the mean of its divisors is an integer number (4564755).

Almost surely, 2^140138712 is an apocalyptic number.

140138712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140138712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219108240).

140138712 is an abundant number, since it is smaller than the sum of its proper divisors (298077768).

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

140138712 is a wasteful number, since it uses less digits than its factorization.

140138712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873 (or 2866 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 140138712 is about 11838.0197668360. The cubic root of 140138712 is about 519.4208443505.

Adding to 140138712 its reverse (217831041), we get a palindrome (357969753).

The spelling of 140138712 in words is "one hundred forty million, one hundred thirty-eight thousand, seven hundred twelve".