127042 has 4 divisors (see below), whose sum is σ = 190566. Its totient is φ = 63520.

The previous prime is 127037. The next prime is 127051. The reversal of 127042 is 240721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240721 = 13 ⋅18517.

It can be written as a sum of positive squares in only one way, i.e., 101761 + 25281 = 319^2 + 159^2 .

It is a super-2 number, since 2×127042² = 32279339528, which contains 22 as substring.

It is an unprimeable number.

127042 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, 31759 + ... + 31762.

2¹²⁷⁰⁴² is an apocalyptic number.

127042 is a deficient number, since it is larger than the sum of its proper divisors (63524).

127042 is an equidigital number, since it uses as much as digits as its factorization.

127042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63523.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 127042 is about 356.4295161740. The cubic root of 127042 is about 50.2707973944.

Adding to 127042 its reverse (240721), we get a palindrome (367763).

The spelling of 127042 in words is "one hundred twenty-seven thousand, forty-two", and thus it is an iban number.