2154120 has 64 divisors (see below), whose sum is σ = 6696000. Its totient is φ = 553728.

The previous prime is 2154109. The next prime is 2154127. The reversal of 2154120 is 214512.

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 2154120.

It is not an unprimeable number, because it can be changed into a prime (2154127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3171 + ... + 3789.

It is an arithmetic number, because the mean of its divisors is an integer number (104625).

2^2154120 is an apocalyptic number.

2154120 is a gapful number since it is divisible by the number (20) 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 2154120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3348000).

2154120 is an abundant number, since it is smaller than the sum of its proper divisors (4541880).

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

2154120 is a wasteful number, since it uses less digits than its factorization.

2154120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 658 counting only the distinct ones).

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

The square root of 2154120 is about 1467.6920657958. The cubic root of 2154120 is about 129.1486778047.

Adding to 2154120 its reverse (214512), we get a palindrome (2368632).

The spelling of 2154120 in words is "two million, one hundred fifty-four thousand, one hundred twenty".