11142545 has 4 divisors (see below), whose sum is σ = 13371060. Its totient is φ = 8914032.

The previous prime is 11142539. The next prime is 11142553. The reversal of 11142545 is 54524111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54524111 = 83 ⋅656917.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 5870929 = 2296^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 11142545 - 2¹⁰ = 11141521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11142545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114250 + ... + 1114259.

It is an arithmetic number, because the mean of its divisors is an integer number (3342765).

Almost surely, 2^11142545 is an apocalyptic number.

It is an amenable number.

11142545 is a deficient number, since it is larger than the sum of its proper divisors (2228515).

11142545 is an equidigital number, since it uses as much as digits as its factorization.

11142545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228514.

The product of its digits is 800, while the sum is 23.

The square root of 11142545 is about 3338.0450865739. The cubic root of 11142545 is about 223.3545473772.

Adding to 11142545 its reverse (54524111), we get a palindrome (65666656).

The spelling of 11142545 in words is "eleven million, one hundred forty-two thousand, five hundred forty-five".