126684969 has 8 divisors (see below), whose sum is σ = 178849440. Its totient is φ = 79488576.

The previous prime is 126684947. The next prime is 126684973. The reversal of 126684969 is 969486621.

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

It is not a de Polignac number, because 126684969 - 2⁵ = 126684937 is a prime.

It is a super-2 number, since 2×126684969² = 32098162741061922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 2484019 = 126684969 / (1 + 2 + 6 + 6 + 8 + 4 + 9 + 6 + 9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126684769) 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, 1241959 + ... + 1242060.

It is an arithmetic number, because the mean of its divisors is an integer number (22356180).

Almost surely, 2^126684969 is an apocalyptic number.

It is an amenable number.

126684969 is a deficient number, since it is larger than the sum of its proper divisors (52164471).

126684969 is a wasteful number, since it uses less digits than its factorization.

126684969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484039.

The product of its digits is 1119744, while the sum is 51.

The square root of 126684969 is about 11255.4417505489. The cubic root of 126684969 is about 502.2366056062.

The spelling of 126684969 in words is "one hundred twenty-six million, six hundred eighty-four thousand, nine hundred sixty-nine".