143474709 has 16 divisors (see below), whose sum is σ = 219248640. Its totient is φ = 81752880.

The previous prime is 143474707. The next prime is 143474731. The reversal of 143474709 is 907474341.

It is not a de Polignac number, because 143474709 - 2¹ = 143474707 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143474701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1977 + ... + 17054.

It is an arithmetic number, because the mean of its divisors is an integer number (13703040).

Almost surely, 2^143474709 is an apocalyptic number.

It is an amenable number.

143474709 is a deficient number, since it is larger than the sum of its proper divisors (75773931).

143474709 is a wasteful number, since it uses less digits than its factorization.

143474709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19400.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 143474709 is about 11978.0928782507. The cubic root of 143474709 is about 523.5101634667.

The spelling of 143474709 in words is "one hundred forty-three million, four hundred seventy-four thousand, seven hundred nine".