143535121 has 4 divisors (see below), whose sum is σ = 143633392. Its totient is φ = 143436852.

The previous prime is 143535109. The next prime is 143535151. The reversal of 143535121 is 121535341.

It is a happy number.

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: 121535341 = 2221 ⋅54721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143535121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143535151) 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, 46911 + ... + 49876.

It is an arithmetic number, because the mean of its divisors is an integer number (35908348).

Almost surely, 2^143535121 is an apocalyptic number.

It is an amenable number.

143535121 is a deficient number, since it is larger than the sum of its proper divisors (98271).

143535121 is an equidigital number, since it uses as much as digits as its factorization.

143535121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98270.

The product of its digits is 1800, while the sum is 25.

The square root of 143535121 is about 11980.6143832443. The cubic root of 143535121 is about 523.5836302084.

The spelling of 143535121 in words is "one hundred forty-three million, five hundred thirty-five thousand, one hundred twenty-one".