1217042 has 4 divisors (see below), whose sum is σ = 1825566. Its totient is φ = 608520.

The previous prime is 1217033. The next prime is 1217053. The reversal of 1217042 is 2407121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2407121 = 61 ⋅39461.

It can be written as a sum of positive squares in only one way, i.e., 625681 + 591361 = 791^2 + 769^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1217042.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304259 + ... + 304262.

2^1217042 is an apocalyptic number.

1217042 is a deficient number, since it is larger than the sum of its proper divisors (608524).

1217042 is an equidigital number, since it uses as much as digits as its factorization.

1217042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608523.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1217042 is about 1103.1962654034. The cubic root of 1217042 is about 106.7665449038.

The spelling of 1217042 in words is "one million, two hundred seventeen thousand, forty-two".