11231442 has 48 divisors (see below), whose sum is σ = 25330968. Its totient is φ = 3594240.

The previous prime is 11231431. The next prime is 11231443. The reversal of 11231442 is 24413211.

It can be written as a sum of positive squares in 4 ways, for example, as 6395841 + 4835601 = 2529^2 + 2199^2 .

It is a super-2 number, since 2×11231442² = 252290578798728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11231443) 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 23 ways as a sum of consecutive naturals, for example, 58098 + ... + 58290.

Almost surely, 2^11231442 is an apocalyptic number.

11231442 is an abundant number, since it is smaller than the sum of its proper divisors (14099526).

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

11231442 is a wasteful number, since it uses less digits than its factorization.

11231442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 312 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11231442 is about 3351.3343611165. The cubic root of 11231442 is about 223.9469607628.

Adding to 11231442 its reverse (24413211), we get a palindrome (35644653).

The spelling of 11231442 in words is "eleven million, two hundred thirty-one thousand, four hundred forty-two".