143426971 has 4 divisors (see below), whose sum is σ = 145038600. Its totient is φ = 141815344.

The previous prime is 143426963. The next prime is 143426981. The reversal of 143426971 is 179624341.

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

It is a cyclic number.

It is not a de Polignac number, because 143426971 - 2³ = 143426963 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 143426971.

It is not an unprimeable number, because it can be changed into a prime (143426981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805681 + ... + 805858.

It is an arithmetic number, because the mean of its divisors is an integer number (36259650).

Almost surely, 2^143426971 is an apocalyptic number.

143426971 is a deficient number, since it is larger than the sum of its proper divisors (1611629).

143426971 is an equidigital number, since it uses as much as digits as its factorization.

143426971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611628.

The product of its digits is 36288, while the sum is 37.

The square root of 143426971 is about 11976.0999912325. The cubic root of 143426971 is about 523.4520949271.

The spelling of 143426971 in words is "one hundred forty-three million, four hundred twenty-six thousand, nine hundred seventy-one".