742291 has 4 divisors (see below), whose sum is σ = 809784. Its totient is φ = 674800.

The previous prime is 742289. The next prime is 742307. The reversal of 742291 is 192247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192247 = 11 ⋅17477.

It is a cyclic number.

It is not a de Polignac number, because 742291 - 2¹ = 742289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742201) 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 3 ways as a sum of consecutive naturals, for example, 33730 + ... + 33751.

It is an arithmetic number, because the mean of its divisors is an integer number (202446).

2⁷⁴²²⁹¹ is an apocalyptic number.

742291 is a deficient number, since it is larger than the sum of its proper divisors (67493).

742291 is a wasteful number, since it uses less digits than its factorization.

742291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67492.

The product of its digits is 1008, while the sum is 25.

The square root of 742291 is about 861.5631143451. The cubic root of 742291 is about 90.5436640025.

The spelling of 742291 in words is "seven hundred forty-two thousand, two hundred ninety-one".