12101142 has 8 divisors (see below), whose sum is σ = 24202296. Its totient is φ = 4033712.

The previous prime is 12101123. The next prime is 12101147. The reversal of 12101142 is 24110121.

It is a happy number.

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

12101142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008423 + ... + 1008434.

It is an arithmetic number, because the mean of its divisors is an integer number (3025287).

Almost surely, 2^12101142 is an apocalyptic number.

12101142 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.

12101142 is a wasteful number, since it uses less digits than its factorization.

12101142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016862.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 12101142 is about 3478.6695732708. The cubic root of 12101142 is about 229.5842647458.

Adding to 12101142 its reverse (24110121), we get a palindrome (36211263).

The spelling of 12101142 in words is "twelve million, one hundred one thousand, one hundred forty-two".