126506117 has 4 divisors (see below), whose sum is σ = 128394336. Its totient is φ = 124617900.

The previous prime is 126506101. The next prime is 126506119. The reversal of 126506117 is 711605621.

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: 711605621 = 271 ⋅2625851.

It is a cyclic number.

It is not a de Polignac number, because 126506117 - 2⁴ = 126506101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126506117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126506119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944009 + ... + 944142.

It is an arithmetic number, because the mean of its divisors is an integer number (32098584).

Almost surely, 2^126506117 is an apocalyptic number.

It is an amenable number.

126506117 is a deficient number, since it is larger than the sum of its proper divisors (1888219).

126506117 is an equidigital number, since it uses as much as digits as its factorization.

126506117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888218.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 126506117 is about 11247.4938097338. The cubic root of 126506117 is about 502.0001441776. Note that the first 3 decimals are identical.

The spelling of 126506117 in words is "one hundred twenty-six million, five hundred six thousand, one hundred seventeen".