126242271 has 12 divisors (see below), whose sum is σ = 185072472. Its totient is φ = 82904976.

The previous prime is 126242269. The next prime is 126242279. The reversal of 126242271 is 172242621.

126242271 is a `hidden beast` number, since 12 + 624 + 2 + 27 + 1 = 666.

It is not a de Polignac number, because 126242271 - 2¹ = 126242269 is a prime.

It is a super-2 number, since 2×126242271² = 31874221974474882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126242279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104076 + ... + 105281.

It is an arithmetic number, because the mean of its divisors is an integer number (15422706).

Almost surely, 2^126242271 is an apocalyptic number.

126242271 is a deficient number, since it is larger than the sum of its proper divisors (58830201).

126242271 is a wasteful number, since it uses less digits than its factorization.

126242271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209430 (or 209427 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 126242271 is about 11235.7585858722. The cubic root of 126242271 is about 501.6509043635.

Adding to 126242271 its reverse (172242621), we get a palindrome (298484892).

The spelling of 126242271 in words is "one hundred twenty-six million, two hundred forty-two thousand, two hundred seventy-one".