13242140 has 12 divisors (see below), whose sum is σ = 27808536. Its totient is φ = 5296848.

The previous prime is 13242121. The next prime is 13242157. The reversal of 13242140 is 4124231.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 331034 + ... + 331073.

It is an arithmetic number, because the mean of its divisors is an integer number (2317378).

Almost surely, 2^13242140 is an apocalyptic number.

13242140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13242140 is an abundant number, since it is smaller than the sum of its proper divisors (14566396).

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

13242140 is a wasteful number, since it uses less digits than its factorization.

13242140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662116 (or 662114 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 13242140 is about 3638.9751304454. The cubic root of 13242140 is about 236.5843748368.

Adding to 13242140 its reverse (4124231), we get a palindrome (17366371).

The spelling of 13242140 in words is "thirteen million, two hundred forty-two thousand, one hundred forty".