742091 has 4 divisors (see below), whose sum is σ = 848112. Its totient is φ = 636072.

The previous prime is 742073. The next prime is 742111. The reversal of 742091 is 190247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742031) 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, 53000 + ... + 53013.

It is an arithmetic number, because the mean of its divisors is an integer number (212028).

2⁷⁴²⁰⁹¹ is an apocalyptic number.

742091 is a deficient number, since it is larger than the sum of its proper divisors (106021).

742091 is a wasteful number, since it uses less digits than its factorization.

742091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106020.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 742091 is about 861.4470384185. The cubic root of 742091 is about 90.5355313612.

The spelling of 742091 in words is "seven hundred forty-two thousand, ninety-one".