1242835 has 16 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 886240.

The previous prime is 1242827. The next prime is 1242841. The reversal of 1242835 is 5382421.

It is not a de Polignac number, because 1242835 - 2³ = 1242827 is a prime.

It is a d-powerful number, because it can be written as 1 + 2¹⁷ + 4² + 2²⁰ + 8⁴ + 3¹⁰ + 5² .

1242835 is a lucky number.

It is a plaindrome in base 14.

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, 3054 + ... + 3436.

It is an arithmetic number, because the mean of its divisors is an integer number (103680).

2^1242835 is an apocalyptic number.

1242835 is a deficient number, since it is larger than the sum of its proper divisors (416045).

1242835 is a wasteful number, since it uses less digits than its factorization.

1242835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458.

The product of its digits is 1920, while the sum is 25.

The square root of 1242835 is about 1114.8250983899. The cubic root of 1242835 is about 107.5155196631.

The spelling of 1242835 in words is "one million, two hundred forty-two thousand, eight hundred thirty-five".