13501242 has 20 divisors (see below), whose sum is σ = 30253146. Its totient is φ = 4500360.

The previous prime is 13501219. The next prime is 13501249. The reversal of 13501242 is 24210531.

It can be written as a sum of positive squares in only one way, i.e., 8874441 + 4626801 = 2979^2 + 2151^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (13501249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 41509 + ... + 41832.

Almost surely, 2^13501242 is an apocalyptic number.

13501242 is an abundant number, since it is smaller than the sum of its proper divisors (16751904).

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

13501242 is an equidigital number, since it uses as much as digits as its factorization.

13501242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83355 (or 83346 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13501242 is about 3674.4036250799. The cubic root of 13501242 is about 238.1174596162.

Adding to 13501242 its reverse (24210531), we get a palindrome (37711773).

The spelling of 13501242 in words is "thirteen million, five hundred one thousand, two hundred forty-two".