742228 has 6 divisors (see below), whose sum is σ = 1298906. Its totient is φ = 371112.

The previous prime is 742219. The next prime is 742229. The reversal of 742228 is 822247.

742228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 685584 + 56644 = 828^2 + 238^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742229) by changing a digit.

742228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92775 + ... + 92782.

2⁷⁴²²²⁸ is an apocalyptic number.

It is an amenable number.

742228 is a deficient number, since it is larger than the sum of its proper divisors (556678).

742228 is a wasteful number, since it uses less digits than its factorization.

742228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185561 (or 185559 counting only the distinct ones).

The product of its digits is 1792, while the sum is 25.

The square root of 742228 is about 861.5265521155. The cubic root of 742228 is about 90.5411023781.

The spelling of 742228 in words is "seven hundred forty-two thousand, two hundred twenty-eight".