20124315434 has 4 divisors (see below), whose sum is σ = 30186473154. Its totient is φ = 10062157716.

The previous prime is 20124315427. The next prime is 20124315457. The reversal of 20124315434 is 43451342102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20015175625 + 109139809 = 141475^2 + 10447^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20124315397 and 20124315406.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5031078857 + ... + 5031078860.

Almost surely, 2^20124315434 is an apocalyptic number.

20124315434 is a deficient number, since it is larger than the sum of its proper divisors (10062157720).

20124315434 is a wasteful number, since it uses less digits than its factorization.

20124315434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062157719.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20124315434 its reverse (43451342102), we get a palindrome (63575657536).

The spelling of 20124315434 in words is "twenty billion, one hundred twenty-four million, three hundred fifteen thousand, four hundred thirty-four".