13242021 has 8 divisors (see below), whose sum is σ = 19014240. Its totient is φ = 8148912.

The previous prime is 13242013. The next prime is 13242029. The reversal of 13242021 is 12024231.

It is an interprime number because it is at equal distance from previous prime (13242013) and next prime (13242029).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13242021 - 2³ = 13242013 is a prime.

It is a super-2 number, since 2×13242021² = 350702240328882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13242029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169731 + ... + 169808.

It is an arithmetic number, because the mean of its divisors is an integer number (2376780).

Almost surely, 2^13242021 is an apocalyptic number.

It is an amenable number.

13242021 is a deficient number, since it is larger than the sum of its proper divisors (5772219).

13242021 is a wasteful number, since it uses less digits than its factorization.

13242021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339555.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 13242021 is about 3638.9587796511. The cubic root of 13242021 is about 236.5836661491.

Adding to 13242021 its reverse (12024231), we get a palindrome (25266252).

The spelling of 13242021 in words is "thirteen million, two hundred forty-two thousand, twenty-one".