126520263 has 24 divisors (see below), whose sum is σ = 191853792. Its totient is φ = 80190528.

The previous prime is 126520253. The next prime is 126520271. The reversal of 126520263 is 362025621.

126520263 is a `hidden beast` number, since 1 + 2 + 652 + 0 + 2 + 6 + 3 = 666.

It is not a de Polignac number, because 126520263 - 2⁸ = 126520007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126520213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34045 + ... + 37577.

It is an arithmetic number, because the mean of its divisors is an integer number (7993908).

Almost surely, 2^126520263 is an apocalyptic number.

126520263 is a deficient number, since it is larger than the sum of its proper divisors (65333529).

126520263 is a wasteful number, since it uses less digits than its factorization.

126520263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 126520263 is about 11248.1226433570. The cubic root of 126520263 is about 502.0188548126.

Adding to 126520263 its reverse (362025621), we get a palindrome (488545884).

It can be divided in two parts, 1265 and 20263, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 126520263 in words is "one hundred twenty-six million, five hundred twenty thousand, two hundred sixty-three".