126689347 has 8 divisors (see below), whose sum is σ = 128666880. Its totient is φ = 124717320.

The previous prime is 126689327. The next prime is 126689351. The reversal of 126689347 is 743986621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126689347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126689297 and 126689306.

It is not an unprimeable number, because it can be changed into a prime (126689327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86104 + ... + 87562.

It is an arithmetic number, because the mean of its divisors is an integer number (16083360).

Almost surely, 2^126689347 is an apocalyptic number.

126689347 is a deficient number, since it is larger than the sum of its proper divisors (1977533).

126689347 is a wasteful number, since it uses less digits than its factorization.

126689347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753.

The product of its digits is 435456, while the sum is 46.

The square root of 126689347 is about 11255.6362325726. The cubic root of 126689347 is about 502.2423909980.

The spelling of 126689347 in words is "one hundred twenty-six million, six hundred eighty-nine thousand, three hundred forty-seven".