126130545 has 12 divisors (see below), whose sum is σ = 218626356. Its totient is φ = 67269600.

The previous prime is 126130519. The next prime is 126130559. The reversal of 126130545 is 545031621.

126130545 is a `hidden beast` number, since 1 + 2 + 613 + 0 + 5 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99380961 + 26749584 = 9969^2 + 5172^2 .

It is not a de Polignac number, because 126130545 - 2¹² = 126126449 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 1401406 + ... + 1401495.

It is an arithmetic number, because the mean of its divisors is an integer number (18218863).

Almost surely, 2^126130545 is an apocalyptic number.

126130545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126130545 is a deficient number, since it is larger than the sum of its proper divisors (92495811).

126130545 is a wasteful number, since it uses less digits than its factorization.

126130545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802912 (or 2802909 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 126130545 is about 11230.7855914001. The cubic root of 126130545 is about 501.5028715616.

The spelling of 126130545 in words is "one hundred twenty-six million, one hundred thirty thousand, five hundred forty-five".