234742 has 4 divisors (see below), whose sum is σ = 352116. Its totient is φ = 117370.

The previous prime is 234733. The next prime is 234743. The reversal of 234742 is 247432.

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

It is a Smith number, since the sum of its digits (22) 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 not an unprimeable number, because it can be changed into a prime (234743) by changing a digit.

234742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 58684 + ... + 58687.

It is an arithmetic number, because the mean of its divisors is an integer number (88029).

2²³⁴⁷⁴² is an apocalyptic number.

234742 is a deficient number, since it is larger than the sum of its proper divisors (117374).

234742 is a wasteful number, since it uses less digits than its factorization.

234742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117373.

The product of its digits is 1344, while the sum is 22.

The square root of 234742 is about 484.5018059822. The cubic root of 234742 is about 61.6874664030.

The spelling of 234742 in words is "two hundred thirty-four thousand, seven hundred forty-two".