742281 has 8 divisors (see below), whose sum is σ = 995904. Its totient is φ = 491760.

The previous prime is 742277. The next prime is 742283. The reversal of 742281 is 182247.

742281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 742281 - 2² = 742277 is a prime.

It is a super-2 number, since 2×742281² = 1101962165922, which contains 22 as substring.

It is a Curzon number.

742281 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141 + ... + 1226.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

2⁷⁴²²⁸¹ is an apocalyptic number.

It is an amenable number.

742281 is a deficient number, since it is larger than the sum of its proper divisors (253623).

742281 is a wasteful number, since it uses less digits than its factorization.

742281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its digits is 896, while the sum is 24.

The square root of 742281 is about 861.5573109202. The cubic root of 742281 is about 90.5432574051.

It can be divided in two parts, 7422 and 81, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 742281 in words is "seven hundred forty-two thousand, two hundred eighty-one".