140243412 has 12 divisors (see below), whose sum is σ = 327234656. Its totient is φ = 46747800.

The previous prime is 140243401. The next prime is 140243417. The reversal of 140243412 is 214342041.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140243417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5843464 + ... + 5843487.

Almost surely, 2^140243412 is an apocalyptic number.

140243412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140243412 is an abundant number, since it is smaller than the sum of its proper divisors (186991244).

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

140243412 is a wasteful number, since it uses less digits than its factorization.

140243412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11686958 (or 11686956 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 140243412 is about 11842.4411334826. The cubic root of 140243412 is about 519.5501681794.

Adding to 140243412 its reverse (214342041), we get a palindrome (354585453).

The spelling of 140243412 in words is "one hundred forty million, two hundred forty-three thousand, four hundred twelve".