121146143 has 4 divisors (see below), whose sum is σ = 121780608. Its totient is φ = 120511680.

The previous prime is 121146139. The next prime is 121146161. The reversal of 121146143 is 341641121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341641121 = 503 ⋅679207.

It is a cyclic number.

It is not a de Polignac number, because 121146143 - 2² = 121146139 is a prime.

It is a super-3 number, since 3×121146143³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121146133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316946 + ... + 317327.

It is an arithmetic number, because the mean of its divisors is an integer number (30445152).

Almost surely, 2^121146143 is an apocalyptic number.

121146143 is a deficient number, since it is larger than the sum of its proper divisors (634465).

121146143 is an equidigital number, since it uses as much as digits as its factorization.

121146143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634464.

The product of its digits is 576, while the sum is 23.

The square root of 121146143 is about 11006.6408590451. The cubic root of 121146143 is about 494.8077926004.

Adding to 121146143 its reverse (341641121), we get a palindrome (462787264).

The spelling of 121146143 in words is "one hundred twenty-one million, one hundred forty-six thousand, one hundred forty-three".