126971686 has 8 divisors (see below), whose sum is σ = 197025120. Its totient is φ = 61296648.

The previous prime is 126971641. The next prime is 126971687. The reversal of 126971686 is 686179621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×126971686² = 32243618091365192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126971687) 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, 1094526 + ... + 1094641.

It is an arithmetic number, because the mean of its divisors is an integer number (24628140).

Almost surely, 2^126971686 is an apocalyptic number.

126971686 is a deficient number, since it is larger than the sum of its proper divisors (70053434).

126971686 is a wasteful number, since it uses less digits than its factorization.

126971686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189198.

The product of its digits is 217728, while the sum is 46.

The square root of 126971686 is about 11268.1713689489. The cubic root of 126971686 is about 502.6152121491.

The spelling of 126971686 in words is "one hundred twenty-six million, nine hundred seventy-one thousand, six hundred eighty-six".