742305 has 32 divisors (see below), whose sum is σ = 1306368. Its totient is φ = 358400.

The previous prime is 742289. The next prime is 742307. The reversal of 742305 is 503247.

It is a happy number.

742305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 742305 - 2⁴ = 742289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10420 + ... + 10490.

It is an arithmetic number, because the mean of its divisors is an integer number (40824).

2⁷⁴²³⁰⁵ is an apocalyptic number.

It is an amenable number.

742305 is a deficient number, since it is larger than the sum of its proper divisors (564063).

742305 is a wasteful number, since it uses less digits than its factorization.

742305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 742305 is about 861.5712390743. The cubic root of 742305 is about 90.5442332327.

The spelling of 742305 in words is "seven hundred forty-two thousand, three hundred five".