140243012 has 48 divisors (see below), whose sum is σ = 305948160. Its totient is φ = 54767232.

The previous prime is 140243011. The next prime is 140243021. The reversal of 140243012 is 210342041.

It is not an unprimeable number, because it can be changed into a prime (140243011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26318 + ... + 31194.

It is an arithmetic number, because the mean of its divisors is an integer number (6373920).

Almost surely, 2^140243012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140243012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152974080).

140243012 is an abundant number, since it is smaller than the sum of its proper divisors (165705148).

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

140243012 is a wasteful number, since it uses less digits than its factorization.

140243012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980 (or 4978 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140243012 is about 11842.4242450606. The cubic root of 140243012 is about 519.5496742280.

Adding to 140243012 its reverse (210342041), we get a palindrome (350585053).

The spelling of 140243012 in words is "one hundred forty million, two hundred forty-three thousand, twelve".