1071242 has 8 divisors (see below), whose sum is σ = 1611876. Its totient is φ = 533952.

The previous prime is 1071241. The next prime is 1071253. The reversal of 1071242 is 2421701.

It can be written as a sum of positive squares in 2 ways, for example, as 1062961 + 8281 = 1031^2 + 91^2 .

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

It is a super-2 number, since 2×1071242² = 2295118845128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1071242.

It is not an unprimeable number, because it can be changed into a prime (1071241) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 1484.

2^1071242 is an apocalyptic number.

1071242 is a deficient number, since it is larger than the sum of its proper divisors (540634).

1071242 is a wasteful number, since it uses less digits than its factorization.

1071242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672.

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

The square root of 1071242 is about 1035.0082125278. The cubic root of 1071242 is about 102.3204709849.

Subtracting from 1071242 its sum of digits (17), we obtain a square (1071225 = 1035²).

Adding to 1071242 its reverse (2421701), we get a palindrome (3492943).

The spelling of 1071242 in words is "one million, seventy-one thousand, two hundred forty-two".