1043000001 has 12 divisors (see below), whose sum is σ = 1508637312. Its totient is φ = 694372536.

The previous prime is 1042999981. The next prime is 1043000009. The reversal of 1043000001 is 1000003401.

It is not a de Polignac number, because 1043000001 - 2²² = 1038805697 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1043000009) 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, 73161 + ... + 86246.

It is an arithmetic number, because the mean of its divisors is an integer number (125719776).

Almost surely, 2^1043000001 is an apocalyptic number.

It is an amenable number.

1043000001 is a deficient number, since it is larger than the sum of its proper divisors (465637311).

1043000001 is a wasteful number, since it uses less digits than its factorization.

1043000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160140 (or 160137 counting only the distinct ones).

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

The square root of 1043000001 is about 32295.5105393923. The cubic root of 1043000001 is about 1014.1326606542.

Adding to 1043000001 its reverse (1000003401), we get a palindrome (2043003402).

The spelling of 1043000001 in words is "one billion, forty-three million, one", and thus it is an aban number and an uban number.