126263505 has 16 divisors (see below), whose sum is σ = 213905664. Its totient is φ = 63379200.

The previous prime is 126263483. The next prime is 126263509. The reversal of 126263505 is 505362621.

It is not a de Polignac number, because 126263505 - 2⁶ = 126263441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126263509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247321 + ... + 247830.

It is an arithmetic number, because the mean of its divisors is an integer number (13369104).

Almost surely, 2^126263505 is an apocalyptic number.

126263505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126263505 is a deficient number, since it is larger than the sum of its proper divisors (87642159).

126263505 is a wasteful number, since it uses less digits than its factorization.

126263505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495176.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 126263505 is about 11236.7034756640. The cubic root of 126263505 is about 501.6790287470.

The spelling of 126263505 in words is "one hundred twenty-six million, two hundred sixty-three thousand, five hundred five".