123220134786 has 32 divisors (see below), whose sum is σ = 281683399680. Its totient is φ = 35201080656.

The previous prime is 123220134773. The next prime is 123220134787. The reversal of 123220134786 is 687431022321.

123220134786 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123220134787) 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 15 ways as a sum of consecutive naturals, for example, 132025 + ... + 513683.

It is an arithmetic number, because the mean of its divisors is an integer number (8802606240).

Almost surely, 2^123220134786 is an apocalyptic number.

123220134786 is an abundant number, since it is smaller than the sum of its proper divisors (158463264894).

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

123220134786 is a wasteful number, since it uses less digits than its factorization.

123220134786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389358.

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 123220134786 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred thirty-four thousand, seven hundred eighty-six".