143000001 has 12 divisors (see below), whose sum is σ = 207415780. Its totient is φ = 94936320.

The previous prime is 142999979. The next prime is 143000017. The reversal of 143000001 is 100000341.

It can be written as a sum of positive squares in 2 ways, for example, as 77000625 + 65999376 = 8775^2 + 8124^2 .

It is not a de Polignac number, because 143000001 - 2⁹ = 142999489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143000021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30796 + ... + 35133.

Almost surely, 2^143000001 is an apocalyptic number.

It is an amenable number.

143000001 is a deficient number, since it is larger than the sum of its proper divisors (64415779).

143000001 is a wasteful number, since it uses less digits than its factorization.

143000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66176 (or 66173 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 143000001 is about 11958.2607849135. The cubic root of 143000001 is about 522.9321543946.

Adding to 143000001 its reverse (100000341), we get a palindrome (243000342).

The spelling of 143000001 in words is "one hundred forty-three million, one", and thus it is an aban number.