20140434234 has 24 divisors (see below), whose sum is σ = 44037956820. Its totient is φ = 6651885888.

The previous prime is 20140434217. The next prime is 20140434239. The reversal of 20140434234 is 43243404102.

It is a happy number.

20140434234 is a `hidden beast` number, since 20 + 1 + 404 + 3 + 4 + 234 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20139867225 + 567009 = 141915^2 + 753^2 .

It is a super-2 number, since 2×20140434234² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20140434198 and 20140434207.

It is not an unprimeable number, because it can be changed into a prime (20140434239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5130667 + ... + 5134590.

Almost surely, 2^20140434234 is an apocalyptic number.

20140434234 is an abundant number, since it is smaller than the sum of its proper divisors (23897522586).

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

20140434234 is a wasteful number, since it uses less digits than its factorization.

20140434234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10265374 (or 10265371 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20140434234 its reverse (43243404102), we get a palindrome (63383838336).

The spelling of 20140434234 in words is "twenty billion, one hundred forty million, four hundred thirty-four thousand, two hundred thirty-four".