127143242 has 4 divisors (see below), whose sum is σ = 190714866. Its totient is φ = 63571620.

The previous prime is 127143199. The next prime is 127143251. The reversal of 127143242 is 242341721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242341721 = 113 ⋅2144617.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 152881 = 11269^2 + 391^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31785809 + ... + 31785812.

Almost surely, 2^127143242 is an apocalyptic number.

127143242 is a deficient number, since it is larger than the sum of its proper divisors (63571624).

127143242 is an equidigital number, since it uses as much as digits as its factorization.

127143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63571623.

The product of its digits is 2688, while the sum is 26.

The square root of 127143242 is about 11275.7812146210. The cubic root of 127143242 is about 502.8414774227.

Adding to 127143242 its reverse (242341721), we get a palindrome (369484963).

The spelling of 127143242 in words is "one hundred twenty-seven million, one hundred forty-three thousand, two hundred forty-two".