20403122134 has 4 divisors (see below), whose sum is σ = 30604683204. Its totient is φ = 10201561066.

The previous prime is 20403122119. The next prime is 20403122147. The reversal of 20403122134 is 43122130402.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100780532 + ... + 5100780535.

It is an arithmetic number, because the mean of its divisors is an integer number (7651170801).

Almost surely, 2^20403122134 is an apocalyptic number.

20403122134 is a deficient number, since it is larger than the sum of its proper divisors (10201561070).

20403122134 is a wasteful number, since it uses less digits than its factorization.

20403122134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10201561069.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20403122134 its reverse (43122130402), we get a palindrome (63525252536).

The spelling of 20403122134 in words is "twenty billion, four hundred three million, one hundred twenty-two thousand, one hundred thirty-four".