1230002001 has 24 divisors (see below), whose sum is σ = 1812545280. Its totient is φ = 803609856.

The previous prime is 1230001963. The next prime is 1230002041. The reversal of 1230002001 is 1002000321.

It is a happy number.

It is not a de Polignac number, because 1230002001 - 2⁹ = 1230001489 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 (1230002041) 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 23 ways as a sum of consecutive naturals, for example, 83080 + ... + 96758.

It is an arithmetic number, because the mean of its divisors is an integer number (75522720).

Almost surely, 2^1230002001 is an apocalyptic number.

It is an amenable number.

1230002001 is a deficient number, since it is larger than the sum of its proper divisors (582543279).

1230002001 is a wasteful number, since it uses less digits than its factorization.

1230002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13885 (or 13882 counting only the distinct ones).

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

The square root of 1230002001 is about 35071.3843610428. The cubic root of 1230002001 is about 1071.4418507078.

Adding to 1230002001 its reverse (1002000321), we get a palindrome (2232002322).

The spelling of 1230002001 in words is "one billion, two hundred thirty million, two thousand, one".