13020013042 has 4 divisors (see below), whose sum is σ = 19530019566. Its totient is φ = 6510006520.

The previous prime is 13020013031. The next prime is 13020013063. The reversal of 13020013042 is 24031002031.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 7708664401 + 5311348641 = 87799^2 + 72879^2 .

It is a super-2 number, since 2×13020013042² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255003259 + ... + 3255003262.

Almost surely, 2^13020013042 is an apocalyptic number.

13020013042 is a deficient number, since it is larger than the sum of its proper divisors (6510006524).

13020013042 is an equidigital number, since it uses as much as digits as its factorization.

13020013042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510006523.

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

Adding to 13020013042 its reverse (24031002031), we get a palindrome (37051015073).

The spelling of 13020013042 in words is "thirteen billion, twenty million, thirteen thousand, forty-two".