1290520 has 64 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 401280.

The previous prime is 1290503. The next prime is 1290533. The reversal of 1290520 is 250921.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871 + ... + 3289.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2^1290520 is an apocalyptic number.

1290520 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 1290520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1290520 is an abundant number, since it is smaller than the sum of its proper divisors (2338280).

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

1290520 is a wasteful number, since it uses less digits than its factorization.

1290520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1290520 is about 1136.0105633312. The cubic root of 1290520 is about 108.8733483923.

It can be divided in two parts, 1 and 290520, that added together give a square (290521 = 539²).

The spelling of 1290520 in words is "one million, two hundred ninety thousand, five hundred twenty".