121143142 has 8 divisors (see below), whose sum is σ = 182439432. Its totient is φ = 60330000.

The previous prime is 121143101. The next prime is 121143149. The reversal of 121143142 is 241341121.

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

It is a super-3 number, since 3×121143142³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121143149) 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 3 ways as a sum of consecutive naturals, for example, 120159 + ... + 121162.

It is an arithmetic number, because the mean of its divisors is an integer number (22804929).

Almost surely, 2^121143142 is an apocalyptic number.

121143142 is a deficient number, since it is larger than the sum of its proper divisors (61296290).

121143142 is a wasteful number, since it uses less digits than its factorization.

121143142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241574.

The product of its digits is 192, while the sum is 19.

The square root of 121143142 is about 11006.5045314123. The cubic root of 121143142 is about 494.8037068177.

Adding to 121143142 its reverse (241341121), we get a palindrome (362484263).

The spelling of 121143142 in words is "one hundred twenty-one million, one hundred forty-three thousand, one hundred forty-two".