742730 has 24 divisors (see below), whose sum is σ = 1425708. Its totient is φ = 278528.

The previous prime is 742723. The next prime is 742757. The reversal of 742730 is 37247.

742730 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 6 ways, for example, as 703921 + 38809 = 839^2 + 197^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 742696 and 742705.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2762 + ... + 3018.

2⁷⁴²⁷³⁰ is an apocalyptic number.

742730 is a deficient number, since it is larger than the sum of its proper divisors (682978).

742730 is a wasteful number, since it uses less digits than its factorization.

742730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 742730 is about 861.8178461833. The cubic root of 742730 is about 90.5615100293.

Adding to 742730 its reverse (37247), we get a palindrome (779977).

The spelling of 742730 in words is "seven hundred forty-two thousand, seven hundred thirty".