120503400 has 96 divisors (see below), whose sum is σ = 377252640. Its totient is φ = 31816960.

The previous prime is 120503399. The next prime is 120503407. The reversal of 120503400 is 4305021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120503400.

It is not an unprimeable number, because it can be changed into a prime (120503407) 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, 63262 + ... + 65138.

It is an arithmetic number, because the mean of its divisors is an integer number (3929715).

Almost surely, 2^120503400 is an apocalyptic number.

120503400 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 120503400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188626320).

120503400 is an abundant number, since it is smaller than the sum of its proper divisors (256749240).

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

120503400 is a wasteful number, since it uses less digits than its factorization.

120503400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003 (or 1994 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 120503400 is about 10977.4040647140. The cubic root of 120503400 is about 493.9311699630.

Adding to 120503400 its reverse (4305021), we get a palindrome (124808421).

The spelling of 120503400 in words is "one hundred twenty million, five hundred three thousand, four hundred".