742705 has 8 divisors (see below), whose sum is σ = 901800. Its totient is φ = 587136.

The previous prime is 742699. The next prime is 742711. The reversal of 742705 is 507247.

742705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (742699) and next prime (742711).

It can be written as a sum of positive squares in 4 ways, for example, as 21904 + 720801 = 148^2 + 849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 742705 - 2³ = 742697 is a prime.

It is a super-2 number, since 2×742705² = 1103221434050, which contains 22 as substring.

It is an Ulam number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 742705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390 + ... + 1279.

It is an arithmetic number, because the mean of its divisors is an integer number (112725).

2⁷⁴²⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

742705 is a deficient number, since it is larger than the sum of its proper divisors (159095).

742705 is a wasteful number, since it uses less digits than its factorization.

742705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 742705 is about 861.8033418362. The cubic root of 742705 is about 90.5604939296.

The spelling of 742705 in words is "seven hundred forty-two thousand, seven hundred five".