123344432120 has 128 divisors (see below), whose sum is σ = 353347747200. Its totient is φ = 37690361856.

The previous prime is 123344432069. The next prime is 123344432173. The reversal of 123344432120 is 21234443321.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478679 + ... + 689798.

It is an arithmetic number, because the mean of its divisors is an integer number (2760529275).

Almost surely, 2^123344432120 is an apocalyptic number.

123344432120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123344432120 is an abundant number, since it is smaller than the sum of its proper divisors (230003315080).

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

123344432120 is a wasteful number, since it uses less digits than its factorization.

123344432120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168537 (or 1168533 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 123344432120 its reverse (21234443321), we get a palindrome (144578875441).

The spelling of 123344432120 in words is "one hundred twenty-three billion, three hundred forty-four million, four hundred thirty-two thousand, one hundred twenty".