123023503420 has 24 divisors (see below), whose sum is σ = 258965960400. Its totient is φ = 49091953152.

The previous prime is 123023503391. The next prime is 123023503451. The reversal of 123023503420 is 24305320321.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 7331925 + ... + 7348684.

It is an arithmetic number, because the mean of its divisors is an integer number (10790248350).

Almost surely, 2^123023503420 is an apocalyptic number.

123023503420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123023503420 is an abundant number, since it is smaller than the sum of its proper divisors (135942456980).

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

123023503420 is a wasteful number, since it uses less digits than its factorization.

123023503420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14681037 (or 14681035 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 123023503420 its reverse (24305320321), we get a palindrome (147328823741).

The spelling of 123023503420 in words is "one hundred twenty-three billion, twenty-three million, five hundred three thousand, four hundred twenty".