1020402030103 has 4 divisors (see below), whose sum is σ = 1020406915440. Its totient is φ = 1020397144768.

The previous prime is 1020402030091. The next prime is 1020402030211. The reversal of 1020402030103 is 3010302040201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020402030103 - 2¹³ = 1020402021911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020402033103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2114683 + ... + 2551996.

It is an arithmetic number, because the mean of its divisors is an integer number (255101728860).

Almost surely, 2^{1020402030103} is an apocalyptic number.

1020402030103 is a deficient number, since it is larger than the sum of its proper divisors (4885337).

1020402030103 is an equidigital number, since it uses as much as digits as its factorization.

1020402030103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885336.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1020402030103 its reverse (3010302040201), we get a palindrome (4030704070304).

The spelling of 1020402030103 in words is "one trillion, twenty billion, four hundred two million, thirty thousand, one hundred three".