143121 has 8 divisors (see below), whose sum is σ = 208224. Its totient is φ = 86720.

The previous prime is 143113. The next prime is 143137. The reversal of 143121 is 121341.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 143121 - 2³ = 143113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 143097 and 143106.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143121.

It is not an unprimeable number, because it can be changed into a prime (143111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2136 + ... + 2201.

It is an arithmetic number, because the mean of its divisors is an integer number (26028).

2¹⁴³¹²¹ is an apocalyptic number.

143121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143121 is a deficient number, since it is larger than the sum of its proper divisors (65103).

143121 is a wasteful number, since it uses less digits than its factorization.

143121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351.

The product of its digits is 24, while the sum is 12.

The square root of 143121 is about 378.3133621748. The cubic root of 143121 is about 52.3079605279.

Adding to 143121 its reverse (121341), we get a palindrome (264462).

The spelling of 143121 in words is "one hundred forty-three thousand, one hundred twenty-one", and thus it is an iban number.