11771142 has 8 divisors (see below), whose sum is σ = 23542296. Its totient is φ = 3923712.

The previous prime is 11771131. The next prime is 11771153. The reversal of 11771142 is 24117711.

11771142 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11771131) and next prime (11771153).

It is a sphenic number, since it is the product of 3 distinct primes.

11771142 is an admirable number.

It is a congruent number.

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, 980923 + ... + 980934.

It is an arithmetic number, because the mean of its divisors is an integer number (2942787).

Almost surely, 2^11771142 is an apocalyptic number.

11771142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11771142 is a wasteful number, since it uses less digits than its factorization.

11771142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961862.

The product of its digits is 392, while the sum is 24.

The square root of 11771142 is about 3430.9097918774. The cubic root of 11771142 is about 227.4780689723.

Adding to 11771142 its reverse (24117711), we get a palindrome (35888853).

The spelling of 11771142 in words is "eleven million, seven hundred seventy-one thousand, one hundred forty-two".