742789 has 2 divisors, whose sum is σ = 742790. Its totient is φ = 742788.

The previous prime is 742783. The next prime is 742801. The reversal of 742789 is 987247.

It is a happy number.

742789 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., 412164 + 330625 = 642^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 742789 - 2⁵ = 742757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371394 + 371395.

It is an arithmetic number, because the mean of its divisors is an integer number (371395).

2⁷⁴²⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

742789 is a deficient number, since it is larger than the sum of its proper divisors (1).

742789 is an equidigital number, since it uses as much as digits as its factorization.

742789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 742789 is about 861.8520754747. The cubic root of 742789 is about 90.5639079341.

The spelling of 742789 in words is "seven hundred forty-two thousand, seven hundred eighty-nine".