1242117 has 12 divisors (see below), whose sum is σ = 1817920. Its totient is φ = 817128.

The previous prime is 1242107. The next prime is 1242119. The reversal of 1242117 is 7112421.

It is not a de Polignac number, because 1242117 - 2²⁰ = 193541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1242117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163 + ... + 1584.

2^1242117 is an apocalyptic number.

It is an amenable number.

1242117 is a deficient number, since it is larger than the sum of its proper divisors (575803).

1242117 is a wasteful number, since it uses less digits than its factorization.

1242117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1829 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1242117 is about 1114.5030282597. The cubic root of 1242117 is about 107.4948113594.

Adding to 1242117 its reverse (7112421), we get a palindrome (8354538).

The spelling of 1242117 in words is "one million, two hundred forty-two thousand, one hundred seventeen".