143686145 has 8 divisors (see below), whose sum is σ = 172556520. Its totient is φ = 114860160.

The previous prime is 143686141. The next prime is 143686183. The reversal of 143686145 is 541686341.

It can be written as a sum of positive squares in 4 ways, for example, as 4068289 + 139617856 = 2017^2 + 11816^2 .

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

It is not a de Polignac number, because 143686145 - 2² = 143686141 is a prime.

It is a super-2 number, since 2×143686145² = 41291416529922050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143686099 and 143686108.

It is not an unprimeable number, because it can be changed into a prime (143686141) 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, 3500 + ... + 17309.

It is an arithmetic number, because the mean of its divisors is an integer number (21569565).

Almost surely, 2^143686145 is an apocalyptic number.

It is an amenable number.

143686145 is a deficient number, since it is larger than the sum of its proper divisors (28870375).

143686145 is a wasteful number, since it uses less digits than its factorization.

143686145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22195.

The product of its digits is 69120, while the sum is 38.

The square root of 143686145 is about 11986.9155749092. The cubic root of 143686145 is about 523.7671996296.

The spelling of 143686145 in words is "one hundred forty-three million, six hundred eighty-six thousand, one hundred forty-five".