126606849 has 4 divisors (see below), whose sum is σ = 168809136. Its totient is φ = 84404564.

The previous prime is 126606847. The next prime is 126606863. The reversal of 126606849 is 948606621.

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: 948606621 = 3 ⋅316202207.

It is a cyclic number.

It is not a de Polignac number, because 126606849 - 2¹ = 126606847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126606849.

It is not an unprimeable number, because it can be changed into a prime (126606847) 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, 21101139 + ... + 21101144.

It is an arithmetic number, because the mean of its divisors is an integer number (42202284).

Almost surely, 2^126606849 is an apocalyptic number.

It is an amenable number.

126606849 is a deficient number, since it is larger than the sum of its proper divisors (42202287).

126606849 is an equidigital number, since it uses as much as digits as its factorization.

126606849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42202286.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 126606849 is about 11251.9708940256. The cubic root of 126606849 is about 502.1333500230.

The spelling of 126606849 in words is "one hundred twenty-six million, six hundred six thousand, eight hundred forty-nine".