1252420 has 24 divisors (see below), whose sum is σ = 2832984. Its totient is φ = 462336.

The previous prime is 1252411. The next prime is 1252421. The reversal of 1252420 is 242521.

It can be written as a sum of positive squares in 4 ways, for example, as 15876 + 1236544 = 126^2 + 1112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1252394 and 1252403.

It is not an unprimeable number, because it can be changed into a prime (1252421) 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, 2149 + ... + 2668.

It is an arithmetic number, because the mean of its divisors is an integer number (118041).

2^1252420 is an apocalyptic number.

1252420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252420 is an abundant number, since it is smaller than the sum of its proper divisors (1580564).

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

1252420 is a wasteful number, since it uses less digits than its factorization.

1252420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4839 (or 4837 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1252420 is about 1119.1157223451. The cubic root of 1252420 is about 107.7912061145.

Adding to 1252420 its reverse (242521), we get a palindrome (1494941).

It can be divided in two parts, 12524 and 20, that added together give a square (12544 = 112²).

The spelling of 1252420 in words is "one million, two hundred fifty-two thousand, four hundred twenty".