11142775 has 24 divisors (see below), whose sum is σ = 16186464. Its totient is φ = 7449600.

The previous prime is 11142767. The next prime is 11142821. The reversal of 11142775 is 57724111.

11142775 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11142775 - 2³ = 11142767 is a prime.

It is a super-2 number, since 2×11142775² = 248322869401250, which contains 22 as substring.

11142775 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6399 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (674436).

Almost surely, 2^11142775 is an apocalyptic number.

11142775 is a deficient number, since it is larger than the sum of its proper divisors (5043689).

11142775 is a wasteful number, since it uses less digits than its factorization.

11142775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1606 counting only the distinct ones).

The product of its digits is 1960, while the sum is 28.

The square root of 11142775 is about 3338.0795376983. The cubic root of 11142775 is about 223.3560841653.

Adding to 11142775 its reverse (57724111), we get a palindrome (68866886).

The spelling of 11142775 in words is "eleven million, one hundred forty-two thousand, seven hundred seventy-five".