742871 has 4 divisors (see below), whose sum is σ = 744744. Its totient is φ = 741000.

The previous prime is 742817. The next prime is 742891. The reversal of 742871 is 178247.

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

It is a cyclic number.

It is not a de Polignac number, because 742871 - 2¹⁰ = 741847 is a prime.

It is a Duffinian number.

It is a congruent 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80 + ... + 1221.

It is an arithmetic number, because the mean of its divisors is an integer number (186186).

2⁷⁴²⁸⁷¹ is an apocalyptic number.

742871 is a deficient number, since it is larger than the sum of its proper divisors (1873).

742871 is a wasteful number, since it uses less digits than its factorization.

742871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872.

The product of its digits is 3136, while the sum is 29.

The square root of 742871 is about 861.8996461306. The cubic root of 742871 is about 90.5672404046.

The spelling of 742871 in words is "seven hundred forty-two thousand, eight hundred seventy-one".