125842 has 4 divisors (see below), whose sum is σ = 188766. Its totient is φ = 62920.

The previous prime is 125821. The next prime is 125863. The reversal of 125842 is 248521.

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

It is an interprime number because it is at equal distance from previous prime (125821) and next prime (125863).

It can be written as a sum of positive squares in only one way, i.e., 103041 + 22801 = 321^2 + 151^2 .

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 an unprimeable number.

125842 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, 31459 + ... + 31462.

2¹²⁵⁸⁴² is an apocalyptic number.

125842 is a deficient number, since it is larger than the sum of its proper divisors (62924).

125842 is an equidigital number, since it uses as much as digits as its factorization.

125842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62923.

The product of its digits is 640, while the sum is 22.

The square root of 125842 is about 354.7421598852. The cubic root of 125842 is about 50.1120155297.

The spelling of 125842 in words is "one hundred twenty-five thousand, eight hundred forty-two".