143001161 has 8 divisors (see below), whose sum is σ = 152754984. Its totient is φ = 133396480.

The previous prime is 143001137. The next prime is 143001167. The reversal of 143001161 is 161100341.

It can be written as a sum of positive squares in 4 ways, for example, as 55225 + 142945936 = 235^2 + 11956^2 .

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-143001161 is a prime.

It is a super-3 number, since 3×143001161³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143001167) 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, 35300 + ... + 39141.

It is an arithmetic number, because the mean of its divisors is an integer number (19094373).

Almost surely, 2^143001161 is an apocalyptic number.

It is an amenable number.

143001161 is a deficient number, since it is larger than the sum of its proper divisors (9753823).

143001161 is a wasteful number, since it uses less digits than its factorization.

143001161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74571.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 143001161 is about 11958.3092868515. The cubic root of 143001161 is about 522.9335683798.

The spelling of 143001161 in words is "one hundred forty-three million, one thousand, one hundred sixty-one".