20140223140 has 12 divisors (see below), whose sum is σ = 42294468636. Its totient is φ = 8056089248.

The previous prime is 20140223071. The next prime is 20140223143. The reversal of 20140223140 is 4132204102.

It can be written as a sum of positive squares in 2 ways, for example, as 9282166336 + 10858056804 = 96344^2 + 104202^2 .

It is not an unprimeable number, because it can be changed into a prime (20140223143) 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, 503505559 + ... + 503505598.

It is an arithmetic number, because the mean of its divisors is an integer number (3524539053).

Almost surely, 2^20140223140 is an apocalyptic number.

20140223140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20140223140 is an abundant number, since it is smaller than the sum of its proper divisors (22154245496).

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

20140223140 is a wasteful number, since it uses less digits than its factorization.

20140223140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007011166 (or 1007011164 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20140223140 its reverse (4132204102), we get a palindrome (24272427242).

The spelling of 20140223140 in words is "twenty billion, one hundred forty million, two hundred twenty-three thousand, one hundred forty".