11142536 has 8 divisors (see below), whose sum is σ = 20892270. Its totient is φ = 5571264.

The previous prime is 11142491. The next prime is 11142539. The reversal of 11142536 is 63524111.

It can be written as a sum of positive squares in only one way, i.e., 10201636 + 940900 = 3194^2 + 970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×11142536² = 248312217022592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11142539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696401 + ... + 696416.

Almost surely, 2^11142536 is an apocalyptic number.

It is an amenable number.

11142536 is a deficient number, since it is larger than the sum of its proper divisors (9749734).

11142536 is a wasteful number, since it uses less digits than its factorization.

11142536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1392823 (or 1392819 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 11142536 is about 3338.0437384792. The cubic root of 11142536 is about 223.3544872416.

Adding to 11142536 its reverse (63524111), we get a palindrome (74666647).

The spelling of 11142536 in words is "eleven million, one hundred forty-two thousand, five hundred thirty-six".