13042121 has 8 divisors (see below), whose sum is σ = 13244064. Its totient is φ = 12841920.

The previous prime is 13042109. The next prime is 13042129. The reversal of 13042121 is 12124031.

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

It is a cyclic number.

It is not a de Polignac number, because 13042121 - 2¹⁴ = 13025737 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 = 13042096 and 13042105.

It is not an unprimeable number, because it can be changed into a prime (13042129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23570 + ... + 24116.

It is an arithmetic number, because the mean of its divisors is an integer number (1655508).

Almost surely, 2^13042121 is an apocalyptic number.

It is an amenable number.

13042121 is a deficient number, since it is larger than the sum of its proper divisors (201943).

13042121 is a wasteful number, since it uses less digits than its factorization.

13042121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

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

The square root of 13042121 is about 3611.3876834259. The cubic root of 13042121 is about 235.3871451674.

Adding to 13042121 its reverse (12124031), we get a palindrome (25166152).

The spelling of 13042121 in words is "thirteen million, forty-two thousand, one hundred twenty-one".