143109121 has 4 divisors (see below), whose sum is σ = 150641200. Its totient is φ = 135577044.

The previous prime is 143109103. The next prime is 143109139. The reversal of 143109121 is 121901341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121901341 = 67 ⋅1819423.

It is an interprime number because it is at equal distance from previous prime (143109103) and next prime (143109139).

It is a cyclic number.

It is not a de Polignac number, because 143109121 - 2⁷ = 143108993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143109092 and 143109101.

It is not an unprimeable number, because it can be changed into a prime (143109101) 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, 3766011 + ... + 3766048.

It is an arithmetic number, because the mean of its divisors is an integer number (37660300).

Almost surely, 2^143109121 is an apocalyptic number.

It is an amenable number.

143109121 is a deficient number, since it is larger than the sum of its proper divisors (7532079).

143109121 is an equidigital number, since it uses as much as digits as its factorization.

143109121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532078.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 143109121 is about 11962.8224512445. The cubic root of 143109121 is about 523.0651330615.

The spelling of 143109121 in words is "one hundred forty-three million, one hundred nine thousand, one hundred twenty-one".