126369545 has 4 divisors (see below), whose sum is σ = 151643460. Its totient is φ = 101095632.

The previous prime is 126369527. The next prime is 126369553. The reversal of 126369545 is 545963621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545963621 = 7 ⋅77994803.

It can be written as a sum of positive squares in 2 ways, for example, as 18292729 + 108076816 = 4277^2 + 10396^2 .

It is a cyclic number.

It is not a de Polignac number, because 126369545 - 2⁸ = 126369289 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 3 ways as a sum of consecutive naturals, for example, 12636950 + ... + 12636959.

It is an arithmetic number, because the mean of its divisors is an integer number (37910865).

Almost surely, 2^126369545 is an apocalyptic number.

It is an amenable number.

126369545 is a deficient number, since it is larger than the sum of its proper divisors (25273915).

126369545 is an equidigital number, since it uses as much as digits as its factorization.

126369545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25273914.

The product of its digits is 194400, while the sum is 41.

The square root of 126369545 is about 11241.4209511076. The cubic root of 126369545 is about 501.8194313089.

The spelling of 126369545 in words is "one hundred twenty-six million, three hundred sixty-nine thousand, five hundred forty-five".