11661242 has 4 divisors (see below), whose sum is σ = 17491866. Its totient is φ = 5830620.

The previous prime is 11661241. The next prime is 11661257. The reversal of 11661242 is 24216611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9916201 + 1745041 = 3149^2 + 1321^2 .

It is not an unprimeable number, because it can be changed into a prime (11661241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2915309 + ... + 2915312.

Almost surely, 2^11661242 is an apocalyptic number.

11661242 is a deficient number, since it is larger than the sum of its proper divisors (5830624).

11661242 is an equidigital number, since it uses as much as digits as its factorization.

11661242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5830623.

The product of its digits is 576, while the sum is 23.

The square root of 11661242 is about 3414.8560731018. The cubic root of 11661242 is about 226.7679127662.

Adding to 11661242 its reverse (24216611), we get a palindrome (35877853).

The spelling of 11661242 in words is "eleven million, six hundred sixty-one thousand, two hundred forty-two".