740281 has 4 divisors (see below), whose sum is σ = 746064. Its totient is φ = 734500.

The previous prime is 740279. The next prime is 740287. The reversal of 740281 is 182047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 740281 - 2¹ = 740279 is a prime.

It is a super-2 number, since 2×740281² = 1096031917922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

740281 is a lucky number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (740287) 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, 2695 + ... + 2956.

It is an arithmetic number, because the mean of its divisors is an integer number (186516).

2⁷⁴⁰²⁸¹ is an apocalyptic number.

It is an amenable number.

740281 is a deficient number, since it is larger than the sum of its proper divisors (5783).

740281 is a wasteful number, since it uses less digits than its factorization.

740281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782.

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

The square root of 740281 is about 860.3958391345. The cubic root of 740281 is about 90.4618644204.

The spelling of 740281 in words is "seven hundred forty thousand, two hundred eighty-one".