126545643 has 48 divisors (see below), whose sum is σ = 223142400. Its totient is φ = 67495680.

The previous prime is 126545641. The next prime is 126545663. The reversal of 126545643 is 346545621.

126545643 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 4 + 5 + 643 = 666.

It is not a de Polignac number, because 126545643 - 2¹ = 126545641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126545598 and 126545607.

It is not an unprimeable number, because it can be changed into a prime (126545641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84243 + ... + 85731.

It is an arithmetic number, because the mean of its divisors is an integer number (4648800).

Almost surely, 2^126545643 is an apocalyptic number.

126545643 is a deficient number, since it is larger than the sum of its proper divisors (96596757).

126545643 is a wasteful number, since it uses less digits than its factorization.

126545643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592 (or 1589 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 126545643 is about 11249.2507750516. The cubic root of 126545643 is about 502.0524209423.

The spelling of 126545643 in words is "one hundred twenty-six million, five hundred forty-five thousand, six hundred forty-three".