67242009 has 8 divisors (see below), whose sum is σ = 91842912. Its totient is φ = 43734560.

The previous prime is 67241989. The next prime is 67242011. The reversal of 67242009 is 90024276.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 67242009 - 2⁸ = 67241753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67242029) 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, 273219 + ... + 273464.

It is an arithmetic number, because the mean of its divisors is an integer number (11480364).

Almost surely, 2^67242009 is an apocalyptic number.

It is an amenable number.

67242009 is a deficient number, since it is larger than the sum of its proper divisors (24600903).

67242009 is a wasteful number, since it uses less digits than its factorization.

67242009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546727.

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

The square root of 67242009 is about 8200.1224990850. The cubic root of 67242009 is about 406.6432429251.

The spelling of 67242009 in words is "sixty-seven million, two hundred forty-two thousand, nine".