120015420 has 96 divisors (see below), whose sum is σ = 394480128. Its totient is φ = 26687232.

The previous prime is 120015409. The next prime is 120015503. The reversal of 120015420 is 24510021.

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 120015420.

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, 11679 + ... + 19401.

It is an arithmetic number, because the mean of its divisors is an integer number (4109168).

Almost surely, 2^120015420 is an apocalyptic number.

120015420 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 120015420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197240064).

120015420 is an abundant number, since it is smaller than the sum of its proper divisors (274464708).

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

120015420 is a wasteful number, since it uses less digits than its factorization.

120015420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779 (or 7777 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 120015420 is about 10955.1549509808. The cubic root of 120015420 is about 493.2635411780.

Adding to 120015420 its reverse (24510021), we get a palindrome (144525441).

The spelling of 120015420 in words is "one hundred twenty million, fifteen thousand, four hundred twenty".