120144420 has 72 divisors (see below), whose sum is σ = 397575360. Its totient is φ = 29125440.

The previous prime is 120144383. The next prime is 120144421. The reversal of 120144420 is 24441021.

120144420 is a `hidden beast` number, since 1 + 201 + 44 + 420 = 666.

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 = 120144393 and 120144402.

It is not an unprimeable number, because it can be changed into a prime (120144421) 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, 28360 + ... + 32319.

It is an arithmetic number, because the mean of its divisors is an integer number (5521880).

Almost surely, 2^120144420 is an apocalyptic number.

120144420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120144420 is an abundant number, since it is smaller than the sum of its proper divisors (277430940).

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

120144420 is a wasteful number, since it uses less digits than its factorization.

120144420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60705 (or 60700 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 120144420 is about 10961.0410089553. The cubic root of 120144420 is about 493.4402079547.

Adding to 120144420 its reverse (24441021), we get a palindrome (144585441).

The spelling of 120144420 in words is "one hundred twenty million, one hundred forty-four thousand, four hundred twenty".