126435730 has 8 divisors (see below), whose sum is σ = 227584332. Its totient is φ = 50574288.

The previous prime is 126435721. The next prime is 126435731. The reversal of 126435730 is 37534621.

It can be written as a sum of positive squares in 2 ways, for example, as 113018161 + 13417569 = 10631^2 + 3663^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 126435692 and 126435701.

It is not an unprimeable number, because it can be changed into a prime (126435731) 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 3 ways as a sum of consecutive naturals, for example, 6321777 + ... + 6321796.

Almost surely, 2^126435730 is an apocalyptic number.

126435730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126435730 is a deficient number, since it is larger than the sum of its proper divisors (101148602).

126435730 is a wasteful number, since it uses less digits than its factorization.

126435730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12643580.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 126435730 is about 11244.3643662059. The cubic root of 126435730 is about 501.9070239389.

The spelling of 126435730 in words is "one hundred twenty-six million, four hundred thirty-five thousand, seven hundred thirty".