143215121 has 8 divisors (see below), whose sum is σ = 163788480. Its totient is φ = 122670288.

The previous prime is 143215097. The next prime is 143215139. The reversal of 143215121 is 121512341.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143215121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143215093 and 143215102.

It is not an unprimeable number, because it can be changed into a prime (143215621) 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, 5015 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (20473560).

Almost surely, 2^143215121 is an apocalyptic number.

It is an amenable number.

143215121 is a deficient number, since it is larger than the sum of its proper divisors (20573359).

143215121 is a wasteful number, since it uses less digits than its factorization.

143215121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263.

The product of its digits is 240, while the sum is 20.

The square root of 143215121 is about 11967.2520237522. The cubic root of 143215121 is about 523.1942448426.

Adding to 143215121 its reverse (121512341), we get a palindrome (264727462).

The spelling of 143215121 in words is "one hundred forty-three million, two hundred fifteen thousand, one hundred twenty-one".