1242163 has 16 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 1053216.

The previous prime is 1242151. The next prime is 1242167. The reversal of 1242163 is 3612421.

It is a cyclic number.

It is not a de Polignac number, because 1242163 - 2⁹ = 1241651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 1242163.

It is not an unprimeable number, because it can be changed into a prime (1242167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11556 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (90720).

2^1242163 is an apocalyptic number.

1242163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1242163 is a deficient number, since it is larger than the sum of its proper divisors (209357).

1242163 is a wasteful number, since it uses less digits than its factorization.

1242163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186.

The product of its digits is 288, while the sum is 19.

The square root of 1242163 is about 1114.5236650695. The cubic root of 1242163 is about 107.4961383145.

Adding to 1242163 its reverse (3612421), we get a palindrome (4854584).

The spelling of 1242163 in words is "one million, two hundred forty-two thousand, one hundred sixty-three".