2013203421242 has 16 divisors (see below), whose sum is σ = 3252786890472. Its totient is φ = 928973936640.

The previous prime is 2013203421239. The next prime is 2013203421253. The reversal of 2013203421242 is 2421243023102.

It can be written as a sum of positive squares in 4 ways, for example, as 682984892041 + 1330218529201 = 826429^2 + 1153351^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8077943 + ... + 8323434.

Almost surely, 2^{2013203421242} is an apocalyptic number.

2013203421242 is a deficient number, since it is larger than the sum of its proper divisors (1239583469230).

2013203421242 is a wasteful number, since it uses less digits than its factorization.

2013203421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406113.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 2013203421242 its reverse (2421243023102), we get a palindrome (4434446444344).

The spelling of 2013203421242 in words is "two trillion, thirteen billion, two hundred three million, four hundred twenty-one thousand, two hundred forty-two".