126633245 has 4 divisors (see below), whose sum is σ = 151959900. Its totient is φ = 101306592.

The previous prime is 126633229. The next prime is 126633251. The reversal of 126633245 is 542336621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542336621 = 9613 ⋅56417.

It can be written as a sum of positive squares in 2 ways, for example, as 99780121 + 26853124 = 9989^2 + 5182^2 .

It is a cyclic number.

It is not a de Polignac number, because 126633245 - 2⁴ = 126633229 is a prime.

It is a Curzon number.

It is a congruent number.

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, 12663320 + ... + 12663329.

It is an arithmetic number, because the mean of its divisors is an integer number (37989975).

Almost surely, 2^126633245 is an apocalyptic number.

It is an amenable number.

126633245 is a deficient number, since it is larger than the sum of its proper divisors (25326655).

126633245 is an equidigital number, since it uses as much as digits as its factorization.

126633245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25326654.

The product of its digits is 25920, while the sum is 32.

The square root of 126633245 is about 11253.1437829613. The cubic root of 126633245 is about 502.1682438459.

Adding to 126633245 its reverse (542336621), we get a palindrome (668969866).

The spelling of 126633245 in words is "one hundred twenty-six million, six hundred thirty-three thousand, two hundred forty-five".