126729566 has 16 divisors (see below), whose sum is σ = 192618000. Its totient is φ = 62529408.

The previous prime is 126729541. The next prime is 126729571. The reversal of 126729566 is 665927621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47270 + ... + 49878.

It is an arithmetic number, because the mean of its divisors is an integer number (12038625).

Almost surely, 2^126729566 is an apocalyptic number.

126729566 is a deficient number, since it is larger than the sum of its proper divisors (65888434).

126729566 is a wasteful number, since it uses less digits than its factorization.

126729566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923.

The product of its digits is 272160, while the sum is 44.

The square root of 126729566 is about 11257.4227068188. The cubic root of 126729566 is about 502.2955329288.

The spelling of 126729566 in words is "one hundred twenty-six million, seven hundred twenty-nine thousand, five hundred sixty-six".