126688149 has 12 divisors (see below), whose sum is σ = 209136096. Its totient is φ = 72393192.

The previous prime is 126688141. The next prime is 126688183. The reversal of 126688149 is 941886621.

It is not a de Polignac number, because 126688149 - 2³ = 126688141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126688141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005399 + ... + 1005524.

It is an arithmetic number, because the mean of its divisors is an integer number (17428008).

Almost surely, 2^126688149 is an apocalyptic number.

It is an amenable number.

126688149 is a deficient number, since it is larger than the sum of its proper divisors (82447947).

126688149 is a wasteful number, since it uses less digits than its factorization.

126688149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010936 (or 2010933 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 126688149 is about 11255.5830146643. The cubic root of 126688149 is about 502.2408078912.

The spelling of 126688149 in words is "one hundred twenty-six million, six hundred eighty-eight thousand, one hundred forty-nine".