742573 has 6 divisors (see below), whose sum is σ = 803054. Its totient is φ = 682584.

The previous prime is 742559. The next prime is 742579. The reversal of 742573 is 375247.

It can be written as a sum of positive squares in only one way, i.e., 514089 + 228484 = 717^2 + 478^2 .

It is not a de Polignac number, because 742573 - 2⁵ = 742541 is a prime.

It is an Ulam number.

It is a Duffinian number.

742573 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742579) 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 5 ways as a sum of consecutive naturals, for example, 2988 + ... + 3226.

2⁷⁴²⁵⁷³ is an apocalyptic number.

It is an amenable number.

742573 is a deficient number, since it is larger than the sum of its proper divisors (60481).

742573 is an equidigital number, since it uses as much as digits as its factorization.

742573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 252 counting only the distinct ones).

The product of its digits is 5880, while the sum is 28.

The square root of 742573 is about 861.7267548359. The cubic root of 742573 is about 90.5551285452. Note that the first 3 decimals are identical.

The spelling of 742573 in words is "seven hundred forty-two thousand, five hundred seventy-three".