742549 has 2 divisors, whose sum is σ = 742550. Its totient is φ = 742548.

The previous prime is 742541. The next prime is 742559. The reversal of 742549 is 945247.

742549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734449 + 8100 = 857^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 742549 - 2³ = 742541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 742549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371274 + 371275.

It is an arithmetic number, because the mean of its divisors is an integer number (371275).

2⁷⁴²⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

742549 is a deficient number, since it is larger than the sum of its proper divisors (1).

742549 is an equidigital number, since it uses as much as digits as its factorization.

742549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 31.

The square root of 742549 is about 861.7128291954. The cubic root of 742549 is about 90.5541529524.

The spelling of 742549 in words is "seven hundred forty-two thousand, five hundred forty-nine".