13155442 has 8 divisors (see below), whose sum is σ = 19842732. Its totient is φ = 6541200.

The previous prime is 13155437. The next prime is 13155449. The reversal of 13155442 is 24455131.

It is a happy number.

13155442 is digitally balanced in base 2, because in such base 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 12680721 + 474721 = 3561^2 + 689^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13155449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17809 + ... + 18532.

Almost surely, 2^13155442 is an apocalyptic number.

13155442 is a deficient number, since it is larger than the sum of its proper divisors (6687290).

13155442 is a wasteful number, since it uses less digits than its factorization.

13155442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36524.

The product of its digits is 2400, while the sum is 25.

The square root of 13155442 is about 3627.0431483510. The cubic root of 13155442 is about 236.0669277766.

The spelling of 13155442 in words is "thirteen million, one hundred fifty-five thousand, four hundred forty-two".