123200023420 has 48 divisors (see below), whose sum is σ = 265621356000. Its totient is φ = 47970836480.

The previous prime is 123200023409. The next prime is 123200023439. The reversal of 123200023420 is 24320002321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200871 + ... + 535489.

It is an arithmetic number, because the mean of its divisors is an integer number (5533778250).

Almost surely, 2^123200023420 is an apocalyptic number.

123200023420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123200023420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132810678000).

123200023420 is an abundant number, since it is smaller than the sum of its proper divisors (142421332580).

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

123200023420 is a wasteful number, since it uses less digits than its factorization.

123200023420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335118 (or 335116 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 123200023420 its reverse (24320002321), we get a palindrome (147520025741).

The spelling of 123200023420 in words is "one hundred twenty-three billion, two hundred million, twenty-three thousand, four hundred twenty".