123020215423 has 24 divisors (see below), whose sum is σ = 145361623680. Its totient is φ = 101958084000.

The previous prime is 123020215411. The next prime is 123020215427. The reversal of 123020215423 is 324512020321.

It is not a de Polignac number, because 123020215423 - 2³³ = 114430280831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020215427) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 1496748 + ... + 1576798.

It is an arithmetic number, because the mean of its divisors is an integer number (6056734320).

Almost surely, 2^123020215423 is an apocalyptic number.

123020215423 is a deficient number, since it is larger than the sum of its proper divisors (22341408257).

123020215423 is an frugal number, since it uses more digits than its factorization.

123020215423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80239 (or 80178 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 123020215423 its reverse (324512020321), we get a palindrome (447532235744).

The spelling of 123020215423 in words is "one hundred twenty-three billion, twenty million, two hundred fifteen thousand, four hundred twenty-three".