742881 has 8 divisors (see below), whose sum is σ = 1042720. Its totient is φ = 469152.

The previous prime is 742817. The next prime is 742891. The reversal of 742881 is 188247.

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

It is not a de Polignac number, because 742881 - 2⁶ = 742817 is a prime.

It is a super-2 number, since 2×742881² = 1103744360322, which contains 22 as substring.

It is a Curzon number.

742881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (742801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6460 + ... + 6573.

It is an arithmetic number, because the mean of its divisors is an integer number (130340).

2⁷⁴²⁸⁸¹ is an apocalyptic number.

It is an amenable number.

742881 is a deficient number, since it is larger than the sum of its proper divisors (299839).

742881 is a wasteful number, since it uses less digits than its factorization.

742881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13055.

The product of its digits is 3584, while the sum is 30.

The square root of 742881 is about 861.9054472505. The cubic root of 742881 is about 90.5676467866.

The spelling of 742881 in words is "seven hundred forty-two thousand, eight hundred eighty-one".