123201242420 has 24 divisors (see below), whose sum is σ = 258729647904. Its totient is φ = 49279156256.

The previous prime is 123201242393. The next prime is 123201242441. The reversal of 123201242420 is 24242102321.

123201242420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123201242420² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032287 + ... + 1145433.

It is an arithmetic number, because the mean of its divisors is an integer number (10780401996).

Almost surely, 2^123201242420 is an apocalyptic number.

123201242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123201242420 is an abundant number, since it is smaller than the sum of its proper divisors (135528405484).

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

123201242420 is a wasteful number, since it uses less digits than its factorization.

123201242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167599 (or 167597 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 123201242420 its reverse (24242102321), we get a palindrome (147443344741).

The spelling of 123201242420 in words is "one hundred twenty-three billion, two hundred one million, two hundred forty-two thousand, four hundred twenty".