123223040400 has 120 divisors (see below), whose sum is σ = 398413901664. Its totient is φ = 32552345600.

The previous prime is 123223040393. The next prime is 123223040417. The reversal of 123223040400 is 4040322321.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351441 + ... + 608240.

Almost surely, 2^123223040400 is an apocalyptic number.

123223040400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123223040400 is an abundant number, since it is smaller than the sum of its proper divisors (275190861264).

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

123223040400 is a wasteful number, since it uses less digits than its factorization.

123223040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959809 (or 959798 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 123223040400 its reverse (4040322321), we get a palindrome (127263362721).

The spelling of 123223040400 in words is "one hundred twenty-three billion, two hundred twenty-three million, forty thousand, four hundred".