143121441 has 8 divisors (see below), whose sum is σ = 191439520. Its totient is φ = 95108832.

The previous prime is 143121431. The next prime is 143121481. The reversal of 143121441 is 144121341.

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

It is a de Polignac number, because none of the positive numbers 2^k-143121441 is a prime.

It is a Duffinian number.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (143121431) 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, 75271 + ... + 77148.

It is an arithmetic number, because the mean of its divisors is an integer number (23929940).

Almost surely, 2^143121441 is an apocalyptic number.

It is an amenable number.

143121441 is a deficient number, since it is larger than the sum of its proper divisors (48318079).

143121441 is a wasteful number, since it uses less digits than its factorization.

143121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152735.

The product of its digits is 384, while the sum is 21.

The square root of 143121441 is about 11963.3373688114. The cubic root of 143121441 is about 523.0801425346.

Adding to 143121441 its reverse (144121341), we get a palindrome (287242782).

It can be divided in two parts, 14312 and 1441, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 143121441 in words is "one hundred forty-three million, one hundred twenty-one thousand, four hundred forty-one".