13145442 has 16 divisors (see below), whose sum is σ = 26624640. Its totient is φ = 4326192.

The previous prime is 13145417. The next prime is 13145449. The reversal of 13145442 is 24454131.

It is not an unprimeable number, because it can be changed into a prime (13145449) 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, 13393 + ... + 14340.

It is an arithmetic number, because the mean of its divisors is an integer number (1664040).

Almost surely, 2^13145442 is an apocalyptic number.

13145442 is an abundant number, since it is smaller than the sum of its proper divisors (13479198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13145442 is a wasteful number, since it uses less digits than its factorization.

13145442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27817.

The product of its digits is 1920, while the sum is 24.

The square root of 13145442 is about 3625.6643529152. The cubic root of 13145442 is about 236.0070978426.

Adding to 13145442 its reverse (24454131), we get a palindrome (37599573).

The spelling of 13145442 in words is "thirteen million, one hundred forty-five thousand, four hundred forty-two".