1217442 has 8 divisors (see below), whose sum is σ = 2434896. Its totient is φ = 405812.

The previous prime is 1217423. The next prime is 1217443. The reversal of 1217442 is 2447121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1217442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1217443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101448 + ... + 101459.

It is an arithmetic number, because the mean of its divisors is an integer number (304362).

2^1217442 is an apocalyptic number.

1217442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217442 is a wasteful number, since it uses less digits than its factorization.

1217442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202912.

The product of its digits is 448, while the sum is 21.

The square root of 1217442 is about 1103.3775419139. The cubic root of 1217442 is about 106.7782404575.

The spelling of 1217442 in words is "one million, two hundred seventeen thousand, four hundred forty-two".