13121435 has 8 divisors (see below), whose sum is σ = 16130016. Its totient is φ = 10240960.

The previous prime is 13121429. The next prime is 13121441. The reversal of 13121435 is 53412131.

It is an interprime number because it is at equal distance from previous prime (13121429) and next prime (13121441).

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

It is not a de Polignac number, because 13121435 - 2⁶ = 13121371 is a prime.

It is a super-3 number, since 3×13121435³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31799 + ... + 32208.

It is an arithmetic number, because the mean of its divisors is an integer number (2016252).

Almost surely, 2^13121435 is an apocalyptic number.

13121435 is a deficient number, since it is larger than the sum of its proper divisors (3008581).

13121435 is an equidigital number, since it uses as much as digits as its factorization.

13121435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64053.

The product of its digits is 360, while the sum is 20.

The square root of 13121435 is about 3622.3521363887. The cubic root of 13121435 is about 235.8633401561.

Adding to 13121435 its reverse (53412131), we get a palindrome (66533566).

The spelling of 13121435 in words is "thirteen million, one hundred twenty-one thousand, four hundred thirty-five".