143145907 has 4 divisors (see below), whose sum is σ = 144621736. Its totient is φ = 141670080.

The previous prime is 143145889. The next prime is 143145911. The reversal of 143145907 is 709541341.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143145907 is a prime.

It is a super-3 number, since 3×143145907³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143145007) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 737769 + ... + 737962.

It is an arithmetic number, because the mean of its divisors is an integer number (36155434).

Almost surely, 2^143145907 is an apocalyptic number.

143145907 is a deficient number, since it is larger than the sum of its proper divisors (1475829).

143145907 is an equidigital number, since it uses as much as digits as its factorization.

143145907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475828.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 143145907 is about 11964.3598658683. The cubic root of 143145907 is about 523.1099469430.

The spelling of 143145907 in words is "one hundred forty-three million, one hundred forty-five thousand, nine hundred seven".