1252520 has 32 divisors (see below), whose sum is σ = 2850120. Its totient is φ = 495360.

The previous prime is 1252507. The next prime is 1252523. The reversal of 1252520 is 252521.

1252520 = T₃₁₁ + T₃₁₂ + ... + T₃₃₄.

It can be written as a sum of positive squares in 4 ways, for example, as 894916 + 357604 = 946^2 + 598^2 .

It is not an unprimeable number, because it can be changed into a prime (1252523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6830 + ... + 7010.

2^1252520 is an apocalyptic number.

1252520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252520 is an abundant number, since it is smaller than the sum of its proper divisors (1597600).

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

1252520 is a wasteful number, since it uses less digits than its factorization.

1252520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1252520 is about 1119.1603995853. The cubic root of 1252520 is about 107.7940749162.

Subtracting from 1252520 its reverse (252521), we obtain a palindrome (999999).

The spelling of 1252520 in words is "one million, two hundred fifty-two thousand, five hundred twenty".