121142131 has 8 divisors (see below), whose sum is σ = 132362928. Its totient is φ = 109956000.

The previous prime is 121142129. The next prime is 121142159. The reversal of 121142131 is 131241121.

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

It is not a de Polignac number, because 121142131 - 2¹ = 121142129 is a prime.

It is a super-3 number, since 3×121142131³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121142101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060 + ... + 15601.

It is an arithmetic number, because the mean of its divisors is an integer number (16545366).

Almost surely, 2^121142131 is an apocalyptic number.

121142131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121142131 is a deficient number, since it is larger than the sum of its proper divisors (11220797).

121142131 is a wasteful number, since it uses less digits than its factorization.

121142131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17333.

The product of its digits is 48, while the sum is 16.

The square root of 121142131 is about 11006.4586039289. The cubic root of 121142131 is about 494.8023303525.

Adding to 121142131 its reverse (131241121), we get a palindrome (252383252).

The spelling of 121142131 in words is "one hundred twenty-one million, one hundred forty-two thousand, one hundred thirty-one".