1521120 has 48 divisors (see below), whose sum is σ = 4793040. Its totient is φ = 405504.

The previous prime is 1521119. The next prime is 1521133. The reversal of 1521120 is 211251.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1521096 and 1521105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105 + ... + 2064.

It is an arithmetic number, because the mean of its divisors is an integer number (99855).

2^1521120 is an apocalyptic number.

1521120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1521120 is an abundant number, since it is smaller than the sum of its proper divisors (3271920).

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

1521120 is a wasteful number, since it uses less digits than its factorization.

1521120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187 (or 3179 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1521120 is about 1233.3369369317. The cubic root of 1521120 is about 115.0061748417.

Adding to 1521120 its reverse (211251), we get a palindrome (1732371).

The spelling of 1521120 in words is "one million, five hundred twenty-one thousand, one hundred twenty".