1242535 has 16 divisors (see below), whose sum is σ = 1723392. Its totient is φ = 842400.

The previous prime is 1242517. The next prime is 1242569. The reversal of 1242535 is 5352421.

It is not a de Polignac number, because 1242535 - 2⁵ = 1242503 is a prime.

It is a Duffinian number.

1242535 is a lucky 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 15 ways as a sum of consecutive naturals, for example, 4450 + ... + 4720.

It is an arithmetic number, because the mean of its divisors is an integer number (107712).

2^1242535 is an apocalyptic number.

1242535 is a deficient number, since it is larger than the sum of its proper divisors (480857).

1242535 is a wasteful number, since it uses less digits than its factorization.

1242535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414.

The product of its digits is 1200, while the sum is 22.

The square root of 1242535 is about 1114.6905400155. The cubic root of 1242535 is about 107.5068681388.

Adding to 1242535 its reverse (5352421), we get a palindrome (6594956).

The spelling of 1242535 in words is "one million, two hundred forty-two thousand, five hundred thirty-five".