13155242 has 4 divisors (see below), whose sum is σ = 19732866. Its totient is φ = 6577620.

The previous prime is 13155223. The next prime is 13155281. The reversal of 13155242 is 24255131.

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

It can be written as a sum of positive squares in only one way, i.e., 13097161 + 58081 = 3619^2 + 241^2 .

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 as a sum of consecutive naturals, namely, 3288809 + ... + 3288812.

Almost surely, 2^13155242 is an apocalyptic number.

13155242 is a deficient number, since it is larger than the sum of its proper divisors (6577624).

13155242 is an equidigital number, since it uses as much as digits as its factorization.

13155242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6577623.

The product of its digits is 1200, while the sum is 23.

The square root of 13155242 is about 3627.0155775789. The cubic root of 13155242 is about 236.0657314751.

The spelling of 13155242 in words is "thirteen million, one hundred fifty-five thousand, two hundred forty-two".