143001409 has 8 divisors (see below), whose sum is σ = 144901800. Its totient is φ = 141113856.

The previous prime is 143001371. The next prime is 143001431. The reversal of 143001409 is 904100341.

It can be written as a sum of positive squares in 4 ways, for example, as 1272384 + 141729025 = 1128^2 + 11905^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 143001409 - 2²³ = 134612801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143001409.

It is not an unprimeable number, because it can be changed into a prime (143001479) 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, 20337 + ... + 26449.

It is an arithmetic number, because the mean of its divisors is an integer number (18112725).

Almost surely, 2^143001409 is an apocalyptic number.

It is an amenable number.

143001409 is a deficient number, since it is larger than the sum of its proper divisors (1900391).

143001409 is a wasteful number, since it uses less digits than its factorization.

143001409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 143001409 is about 11958.3196562059. The cubic root of 143001409 is about 522.9338706791.

The spelling of 143001409 in words is "one hundred forty-three million, one thousand, four hundred nine".