742209 has 8 divisors (see below), whose sum is σ = 1065792. Its totient is φ = 456720.

The previous prime is 742201. The next prime is 742211. The reversal of 742209 is 902247.

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

It is not a de Polignac number, because 742209 - 2³ = 742201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (742201) 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, 9477 + ... + 9554.

It is an arithmetic number, because the mean of its divisors is an integer number (133224).

2⁷⁴²²⁰⁹ is an apocalyptic number.

It is an amenable number.

742209 is a deficient number, since it is larger than the sum of its proper divisors (323583).

742209 is a wasteful number, since it uses less digits than its factorization.

742209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19047.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 742209 is about 861.5155251068. The cubic root of 742209 is about 90.5403297963.

The spelling of 742209 in words is "seven hundred forty-two thousand, two hundred nine".