120203424 has 144 divisors (see below), whose sum is σ = 392726880. Its totient is φ = 34490880.

The previous prime is 120203423. The next prime is 120203429. The reversal of 120203424 is 424302021.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 120203397 and 120203406.

It is not an unprimeable number, because it can be changed into a prime (120203423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59194 + ... + 61190.

It is an arithmetic number, because the mean of its divisors is an integer number (2727270).

Almost surely, 2^120203424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120203424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196363440).

120203424 is an abundant number, since it is smaller than the sum of its proper divisors (272523456).

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

120203424 is a wasteful number, since it uses less digits than its factorization.

120203424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 120203424 is about 10963.7322112500. The cubic root of 120203424 is about 493.5209723690.

Adding to 120203424 its reverse (424302021), we get a palindrome (544505445).

The spelling of 120203424 in words is "one hundred twenty million, two hundred three thousand, four hundred twenty-four".