13154121 has 12 divisors (see below), whose sum is σ = 19061172. Its totient is φ = 8741376.

The previous prime is 13154117. The next prime is 13154131. The reversal of 13154121 is 12145131.

13154121 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1354896 + 11799225 = 1164^2 + 3435^2 .

It is not a de Polignac number, because 13154121 - 2² = 13154117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13154094 and 13154103.

It is not an unprimeable number, because it can be changed into a prime (13154131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 865 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (1588431).

Almost surely, 2^13154121 is an apocalyptic number.

It is an amenable number.

13154121 is a deficient number, since it is larger than the sum of its proper divisors (5907051).

13154121 is a wasteful number, since it uses less digits than its factorization.

13154121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680 (or 4677 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 13154121 is about 3626.8610395216. The cubic root of 13154121 is about 236.0590259808.

Adding to 13154121 its reverse (12145131), we get a palindrome (25299252).

The spelling of 13154121 in words is "thirteen million, one hundred fifty-four thousand, one hundred twenty-one".