13142021 has 4 divisors (see below), whose sum is σ = 13262700. Its totient is φ = 13021344.

The previous prime is 13142011. The next prime is 13142027. The reversal of 13142021 is 12024131.

13142021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4468996 + 8673025 = 2114^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 13142021 - 2¹⁰ = 13140997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13141987 and 13142005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60176 + ... + 60393.

It is an arithmetic number, because the mean of its divisors is an integer number (3315675).

Almost surely, 2^13142021 is an apocalyptic number.

It is an amenable number.

13142021 is a deficient number, since it is larger than the sum of its proper divisors (120679).

13142021 is a wasteful number, since it uses less digits than its factorization.

13142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120678.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 13142021 is about 3625.1925466105. The cubic root of 13142021 is about 235.9866230568.

Adding to 13142021 its reverse (12024131), we get a palindrome (25166152).

The spelling of 13142021 in words is "thirteen million, one hundred forty-two thousand, twenty-one".