742851 has 14 divisors (see below), whose sum is σ = 1114860. Its totient is φ = 494748.

The previous prime is 742817. The next prime is 742891. The reversal of 742851 is 158247.

It is not a de Polignac number, because 742851 - 2⁷ = 742723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 13 ways as a sum of consecutive naturals, for example, 220 + ... + 1238.

2⁷⁴²⁸⁵¹ is an apocalyptic number.

742851 is a deficient number, since it is larger than the sum of its proper divisors (372009).

742851 is an equidigital number, since it uses as much as digits as its factorization.

742851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037 (or 1022 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 742851 is about 861.8880437737. Note that the first 3 decimals coincide. The cubic root of 742851 is about 90.5664276295.

The spelling of 742851 in words is "seven hundred forty-two thousand, eight hundred fifty-one".