742081 has 4 divisors (see below), whose sum is σ = 767700. Its totient is φ = 716464.

The previous prime is 742073. The next prime is 742111. The reversal of 742081 is 180247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 547600 + 194481 = 740^2 + 441^2 .

It is a cyclic number.

It is not a de Polignac number, because 742081 - 2³ = 742073 is a prime.

It is a super-2 number, since 2×742081² = 1101368421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12766 + ... + 12823.

It is an arithmetic number, because the mean of its divisors is an integer number (191925).

2⁷⁴²⁰⁸¹ is an apocalyptic number.

It is an amenable number.

742081 is a deficient number, since it is larger than the sum of its proper divisors (25619).

742081 is a wasteful number, since it uses less digits than its factorization.

742081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25618.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 742081 is about 861.4412342116. The cubic root of 742081 is about 90.5351246907.

The spelling of 742081 in words is "seven hundred forty-two thousand, eighty-one".