747842 has 8 divisors (see below), whose sum is σ = 1128000. Its totient is φ = 371844.

The previous prime is 747841. The next prime is 747853. The reversal of 747842 is 248747.

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

It is a junction number, because it is equal to n+sod(n) for n = 747799 and 747808.

It is not an unprimeable number, because it can be changed into a prime (747841) 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, 542 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (141000).

2⁷⁴⁷⁸⁴² is an apocalyptic number.

747842 is a deficient number, since it is larger than the sum of its proper divisors (380158).

747842 is a wasteful number, since it uses less digits than its factorization.

747842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its digits is 12544, while the sum is 32.

The square root of 747842 is about 864.7785843787. The cubic root of 747842 is about 90.7688049023.

The spelling of 747842 in words is "seven hundred forty-seven thousand, eight hundred forty-two".