274642 has 4 divisors (see below), whose sum is σ = 411966. Its totient is φ = 137320.

The previous prime is 274627. The next prime is 274661. The reversal of 274642 is 246472.

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

It can be written as a sum of positive squares in only one way, i.e., 184041 + 90601 = 429^2 + 301^2 .

It is an unprimeable number.

274642 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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68659 + ... + 68662.

2²⁷⁴⁶⁴² is an apocalyptic number.

274642 is a deficient number, since it is larger than the sum of its proper divisors (137324).

274642 is a wasteful number, since it uses less digits than its factorization.

274642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137323.

The product of its digits is 2688, while the sum is 25.

The square root of 274642 is about 524.0629733152. The cubic root of 274642 is about 65.0013411952.

The spelling of 274642 in words is "two hundred seventy-four thousand, six hundred forty-two".