126742 has 16 divisors (see below), whose sum is σ = 237312. Its totient is φ = 49320.

The previous prime is 126739. The next prime is 126743. The reversal of 126742 is 247621.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126743) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 258 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (14832).

126742 is a Friedman number, since it can be written as 6+712^2/4, using all its digits and the basic arithmetic operations.

2¹²⁶⁷⁴² is an apocalyptic number.

126742 is a deficient number, since it is larger than the sum of its proper divisors (110570).

126742 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 126742 = (212764)₉.

126742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843.

The product of its digits is 672, while the sum is 22.

The square root of 126742 is about 356.0084268666. The cubic root of 126742 is about 50.2311959873.

It can be divided in two parts, 126 and 742, that added together give a palindrome (868).

The spelling of 126742 in words is "one hundred twenty-six thousand, seven hundred forty-two".