121112142 has 8 divisors (see below), whose sum is σ = 242224296. Its totient is φ = 40370712.

The previous prime is 121112129. The next prime is 121112171. The reversal of 121112142 is 241211121.

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

121112142 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, 10092673 + ... + 10092684.

It is an arithmetic number, because the mean of its divisors is an integer number (30278037).

Almost surely, 2^121112142 is an apocalyptic number.

121112142 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.

121112142 is a wasteful number, since it uses less digits than its factorization.

121112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20185362.

The product of its digits is 32, while the sum is 15.

The square root of 121112142 is about 11005.0961831326. The cubic root of 121112142 is about 494.7614971825.

Adding to 121112142 its reverse (241211121), we get a palindrome (362323263).

The spelling of 121112142 in words is "one hundred twenty-one million, one hundred twelve thousand, one hundred forty-two".