1239025 has 12 divisors (see below), whose sum is σ = 1590300. Its totient is φ = 956480.

The previous prime is 1239023. The next prime is 1239041. The reversal of 1239025 is 5209321.

It can be written as a sum of positive squares in 6 ways, for example, as 106929 + 1132096 = 327^2 + 1064^2 .

It is not a de Polignac number, because 1239025 - 2¹ = 1239023 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1238987 and 1239005.

It is not an unprimeable number, because it can be changed into a prime (1239023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130 + ... + 1579.

It is an arithmetic number, because the mean of its divisors is an integer number (132525).

2^1239025 is an apocalyptic number.

It is an amenable number.

1239025 is a deficient number, since it is larger than the sum of its proper divisors (351275).

1239025 is a wasteful number, since it uses less digits than its factorization.

1239025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748 (or 1743 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1239025 is about 1113.1149985514. The cubic root of 1239025 is about 107.4055416875.

The spelling of 1239025 in words is "one million, two hundred thirty-nine thousand, twenty-five".