126782129 has 8 divisors (see below), whose sum is σ = 127975680. Its totient is φ = 125592736.

The previous prime is 126782111. The next prime is 126782137. The reversal of 126782129 is 921287621.

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

It is a cyclic number.

It is not a de Polignac number, because 126782129 - 2⁸ = 126781873 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126782092 and 126782101.

It is not an unprimeable number, because it can be changed into a prime (126782179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114392 + ... + 115494.

It is an arithmetic number, because the mean of its divisors is an integer number (15996960).

Almost surely, 2^126782129 is an apocalyptic number.

It is an amenable number.

126782129 is a deficient number, since it is larger than the sum of its proper divisors (1193551).

126782129 is a wasteful number, since it uses less digits than its factorization.

126782129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079.

The product of its digits is 24192, while the sum is 38.

The square root of 126782129 is about 11259.7570577699. The cubic root of 126782129 is about 502.3649682141.

The spelling of 126782129 in words is "one hundred twenty-six million, seven hundred eighty-two thousand, one hundred twenty-nine".