126717149 has 4 divisors (see below), whose sum is σ = 136464636. Its totient is φ = 116969664.

The previous prime is 126717131. The next prime is 126717197. The reversal of 126717149 is 941717621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7252249 + 119464900 = 2693^2 + 10930^2 .

It is a cyclic number.

It is not a de Polignac number, because 126717149 - 2⁸ = 126716893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126717109) 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, 4873724 + ... + 4873749.

It is an arithmetic number, because the mean of its divisors is an integer number (34116159).

Almost surely, 2^126717149 is an apocalyptic number.

It is an amenable number.

126717149 is a deficient number, since it is larger than the sum of its proper divisors (9747487).

126717149 is an equidigital number, since it uses as much as digits as its factorization.

126717149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747486.

The product of its digits is 21168, while the sum is 38.

The square root of 126717149 is about 11256.8711905218. The cubic root of 126717149 is about 502.2791273718.

The spelling of 126717149 in words is "one hundred twenty-six million, seven hundred seventeen thousand, one hundred forty-nine".