13742409 has 16 divisors (see below), whose sum is σ = 19476288. Its totient is φ = 8589312.

The previous prime is 13742389. The next prime is 13742411. The reversal of 13742409 is 90424731.

It is a happy number.

13742409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13742409 - 2¹⁷ = 13611337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13742459) 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 15 ways as a sum of consecutive naturals, for example, 23529 + ... + 24105.

It is an arithmetic number, because the mean of its divisors is an integer number (1217268).

Almost surely, 2^13742409 is an apocalyptic number.

It is an amenable number.

13742409 is a deficient number, since it is larger than the sum of its proper divisors (5733879).

13742409 is a wasteful number, since it uses less digits than its factorization.

13742409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13742409 is about 3707.0755320063. The cubic root of 13742409 is about 239.5268978671.

The spelling of 13742409 in words is "thirteen million, seven hundred forty-two thousand, four hundred nine".