126730 has 32 divisors (see below), whose sum is σ = 259200. Its totient is φ = 44352.

The previous prime is 126719. The next prime is 126733. The reversal of 126730 is 37621.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 126698 and 126707.

It is not an unprimeable number, because it can be changed into a prime (126733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4356 + ... + 4384.

It is an arithmetic number, because the mean of its divisors is an integer number (8100).

2¹²⁶⁷³⁰ is an apocalyptic number.

126730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126730 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126730 is a wasteful number, since it uses less digits than its factorization.

126730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 126730 is about 355.9915729340. The cubic root of 126730 is about 50.2296106318.

126730 divided by its sum of digits (19) gives a triangular number (6670 = T₁₁₅).

The spelling of 126730 in words is "one hundred twenty-six thousand, seven hundred thirty".