1002002103 has 16 divisors (see below), whose sum is σ = 1493908960. Its totient is φ = 663743808.

The previous prime is 1002002093. The next prime is 1002002123. The reversal of 1002002103 is 3012002001.

It is a happy number.

It is not a de Polignac number, because 1002002103 - 2¹⁶ = 1001936567 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002002123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113950 + ... + 122427.

It is an arithmetic number, because the mean of its divisors is an integer number (93369310).

Almost surely, 2^1002002103 is an apocalyptic number.

1002002103 is a deficient number, since it is larger than the sum of its proper divisors (491906857).

1002002103 is a wasteful number, since it uses less digits than its factorization.

1002002103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236543 (or 236537 counting only the distinct ones).

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

The square root of 1002002103 is about 31654.4168008194. The cubic root of 1002002103 is about 1000.6669227818. Note that the first 3 decimals are identical.

Adding to 1002002103 its reverse (3012002001), we get a palindrome (4014004104).

The spelling of 1002002103 in words is "one billion, two million, two thousand, one hundred three".