20342432434 has 8 divisors (see below), whose sum is σ = 30931644060. Its totient is φ = 10031884416.

The previous prime is 20342432413. The next prime is 20342432471. The reversal of 20342432434 is 43423424302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20120571409 + 221861025 = 141847^2 + 14895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20342432396 and 20342432405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69665719 + ... + 69666010.

Almost surely, 2^20342432434 is an apocalyptic number.

20342432434 is a deficient number, since it is larger than the sum of its proper divisors (10589211626).

20342432434 is a wasteful number, since it uses less digits than its factorization.

20342432434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139331804.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 20342432434 its reverse (43423424302), we get a palindrome (63765856736).

The spelling of 20342432434 in words is "twenty billion, three hundred forty-two million, four hundred thirty-two thousand, four hundred thirty-four".