126643982 has 8 divisors (see below), whose sum is σ = 201140496. Its totient is φ = 59597152.

The previous prime is 126643969. The next prime is 126644009. The reversal of 126643982 is 289346621.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1862378 + ... + 1862445.

It is an arithmetic number, because the mean of its divisors is an integer number (25142562).

Almost surely, 2^126643982 is an apocalyptic number.

126643982 is a deficient number, since it is larger than the sum of its proper divisors (74496514).

126643982 is a wasteful number, since it uses less digits than its factorization.

126643982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724842.

The product of its digits is 124416, while the sum is 41.

The square root of 126643982 is about 11253.6208395343. The cubic root of 126643982 is about 502.1824360855.

The spelling of 126643982 in words is "one hundred twenty-six million, six hundred forty-three thousand, nine hundred eighty-two".