11142513 has 12 divisors (see below), whose sum is σ = 16530228. Its totient is φ = 7227360.

The previous prime is 11142491. The next prime is 11142539. The reversal of 11142513 is 31524111.

11142513 is a `hidden beast` number, since 11 + 142 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8020224 + 3122289 = 2832^2 + 1767^2 .

It is not a de Polignac number, because 11142513 - 2⁶ = 11142449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11142553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16398 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (1377519).

Almost surely, 2^11142513 is an apocalyptic number.

It is an amenable number.

11142513 is a deficient number, since it is larger than the sum of its proper divisors (5387715).

11142513 is a wasteful number, since it uses less digits than its factorization.

11142513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33504 (or 33501 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 11142513 is about 3338.0402933458. The cubic root of 11142513 is about 223.3543335615.

Adding to 11142513 its reverse (31524111), we get a palindrome (42666624).

It can be divided in two parts, 111 and 42513, that added together give a palindrome (42624).

The spelling of 11142513 in words is "eleven million, one hundred forty-two thousand, five hundred thirteen".