547942 has 4 divisors (see below), whose sum is σ = 821916. Its totient is φ = 273970.

The previous prime is 547909. The next prime is 547951. The reversal of 547942 is 249745.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

547942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136984 + ... + 136987.

It is an arithmetic number, because the mean of its divisors is an integer number (205479).

2⁵⁴⁷⁹⁴² is an apocalyptic number.

547942 is a deficient number, since it is larger than the sum of its proper divisors (273974).

547942 is a wasteful number, since it uses less digits than its factorization.

547942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273973.

The product of its digits is 10080, while the sum is 31.

The square root of 547942 is about 740.2310450123. The cubic root of 547942 is about 81.8298076259.

The spelling of 547942 in words is "five hundred forty-seven thousand, nine hundred forty-two".