742306 has 4 divisors (see below), whose sum is σ = 1113462. Its totient is φ = 371152.

The previous prime is 742289. The next prime is 742307. The reversal of 742306 is 603247.

742306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 603247 = 43 ⋅14029.

It can be written as a sum of positive squares in only one way, i.e., 434281 + 308025 = 659^2 + 555^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 185575 + ... + 185578.

2⁷⁴²³⁰⁶ is an apocalyptic number.

742306 is a deficient number, since it is larger than the sum of its proper divisors (371156).

742306 is a wasteful number, since it uses less digits than its factorization.

742306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371155.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 742306 is about 861.5718194092. The cubic root of 742306 is about 90.5442738917.

The spelling of 742306 in words is "seven hundred forty-two thousand, three hundred six".