11042155 has 4 divisors (see below), whose sum is σ = 13250592. Its totient is φ = 8833720.

The previous prime is 11042153. The next prime is 11042183. The reversal of 11042155 is 55124011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55124011 = 263 ⋅209597.

It is not a de Polignac number, because 11042155 - 2¹ = 11042153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11042153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104211 + ... + 1104220.

It is an arithmetic number, because the mean of its divisors is an integer number (3312648).

Almost surely, 2^11042155 is an apocalyptic number.

11042155 is a deficient number, since it is larger than the sum of its proper divisors (2208437).

11042155 is an equidigital number, since it uses as much as digits as its factorization.

11042155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208436.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 11042155 is about 3322.9738187353. The cubic root of 11042155 is about 222.6817435240.

Adding to 11042155 its reverse (55124011), we get a palindrome (66166166).

The spelling of 11042155 in words is "eleven million, forty-two thousand, one hundred fifty-five".