143071645 has 16 divisors (see below), whose sum is σ = 180966960. Its totient is φ = 108419584.

The previous prime is 143071633. The next prime is 143071667. The reversal of 143071645 is 546170341.

It can be written as a sum of positive squares in 8 ways, for example, as 18481401 + 124590244 = 4299^2 + 11162^2 .

It is a cyclic number.

It is not a de Polignac number, because 143071645 - 2⁵ = 143071613 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1624 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (11310435).

Almost surely, 2^143071645 is an apocalyptic number.

It is an amenable number.

143071645 is a deficient number, since it is larger than the sum of its proper divisors (37895315).

143071645 is a wasteful number, since it uses less digits than its factorization.

143071645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18704.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 143071645 is about 11961.2559959228. The cubic root of 143071645 is about 523.0194707023.

The spelling of 143071645 in words is "one hundred forty-three million, seventy-one thousand, six hundred forty-five".