1002030201 has 24 divisors (see below), whose sum is σ = 1569905064. Its totient is φ = 613386240.

The previous prime is 1002030187. The next prime is 1002030209. The reversal of 1002030201 is 1020302001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3154176 + 998876025 = 1776^2 + 31605^2 .

It is not a de Polignac number, because 1002030201 - 2¹⁹ = 1001505913 is a prime.

It is a super-2 number, since 2×1002030201² = 2008129047432200802, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1002030209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73596 + ... + 86141.

It is an arithmetic number, because the mean of its divisors is an integer number (65412711).

Almost surely, 2^1002030201 is an apocalyptic number.

It is an amenable number.

1002030201 is a deficient number, since it is larger than the sum of its proper divisors (567874863).

1002030201 is a wasteful number, since it uses less digits than its factorization.

1002030201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159801 (or 159798 counting only the distinct ones).

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

The square root of 1002030201 is about 31654.8606220277. The cubic root of 1002030201 is about 1000.6762762141.

Adding to 1002030201 its reverse (1020302001), we get a palindrome (2022332202).

The spelling of 1002030201 in words is "one billion, two million, thirty thousand, two hundred one".