1242525 has 12 divisors (see below), whose sum is σ = 2054432. Its totient is φ = 662640.

The previous prime is 1242517. The next prime is 1242569. The reversal of 1242525 is 5252421.

It is a happy number.

It is not a de Polignac number, because 1242525 - 2³ = 1242517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 8209 + ... + 8358.

2^1242525 is an apocalyptic number.

1242525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242525 is a deficient number, since it is larger than the sum of its proper divisors (811907).

1242525 is a wasteful number, since it uses less digits than its factorization.

1242525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16580 (or 16575 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 1242525 is about 1114.6860544566. The cubic root of 1242525 is about 107.5065797307.

Adding to 1242525 its reverse (5252421), we get a palindrome (6494946).

The spelling of 1242525 in words is "one million, two hundred forty-two thousand, five hundred twenty-five".