126627217 has 4 divisors (see below), whose sum is σ = 129572080. Its totient is φ = 123682356.

The previous prime is 126627199. The next prime is 126627223. The reversal of 126627217 is 712726621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712726621 = 857 ⋅831653.

It is a cyclic number.

It is not a de Polignac number, because 126627217 - 2¹⁵ = 126594449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126627227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472367 + ... + 1472452.

It is an arithmetic number, because the mean of its divisors is an integer number (32393020).

Almost surely, 2^126627217 is an apocalyptic number.

It is an amenable number.

126627217 is a deficient number, since it is larger than the sum of its proper divisors (2944863).

126627217 is an equidigital number, since it uses as much as digits as its factorization.

126627217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944862.

The product of its digits is 14112, while the sum is 34.

The square root of 126627217 is about 11252.8759435088. The cubic root of 126627217 is about 502.1602756429.

The spelling of 126627217 in words is "one hundred twenty-six million, six hundred twenty-seven thousand, two hundred seventeen".