126178130 has 32 divisors (see below), whose sum is σ = 253033200. Its totient is φ = 44980992.

The previous prime is 126178123. The next prime is 126178141. The reversal of 126178130 is 31871621.

It can be written as a sum of positive squares in 8 ways, for example, as 22972849 + 103205281 = 4793^2 + 10159^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 126178093 and 126178102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12965 + ... + 20504.

Almost surely, 2^126178130 is an apocalyptic number.

126178130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126178130 is an abundant number, since it is smaller than the sum of its proper divisors (126855070).

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

126178130 is a wasteful number, since it uses less digits than its factorization.

126178130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33518.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 126178130 is about 11232.9038988144. The cubic root of 126178130 is about 501.5659306029.

The spelling of 126178130 in words is "one hundred twenty-six million, one hundred seventy-eight thousand, one hundred thirty".