268742 has 4 divisors (see below), whose sum is σ = 403116. Its totient is φ = 134370.

The previous prime is 268733. The next prime is 268747. The reversal of 268742 is 247862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247862 = 2 ⋅123931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268747) by changing a digit.

268742 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, 67184 + ... + 67187.

It is an arithmetic number, because the mean of its divisors is an integer number (100779).

2²⁶⁸⁷⁴² is an apocalyptic number.

268742 is a deficient number, since it is larger than the sum of its proper divisors (134374).

268742 is a wasteful number, since it uses less digits than its factorization.

268742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134373.

The product of its digits is 5376, while the sum is 29.

The square root of 268742 is about 518.4033178906. The cubic root of 268742 is about 64.5325036985.

The spelling of 268742 in words is "two hundred sixty-eight thousand, seven hundred forty-two".