126163505 has 16 divisors (see below), whose sum is σ = 166837440. Its totient is φ = 90998208.

The previous prime is 126163501. The next prime is 126163547. The reversal of 126163505 is 505361621.

It is a cyclic number.

It is not a de Polignac number, because 126163505 - 2² = 126163501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126163501) 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, 19775 + ... + 25364.

It is an arithmetic number, because the mean of its divisors is an integer number (10427340).

Almost surely, 2^126163505 is an apocalyptic number.

It is an amenable number.

126163505 is a deficient number, since it is larger than the sum of its proper divisors (40673935).

126163505 is a wasteful number, since it uses less digits than its factorization.

126163505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45200.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 126163505 is about 11232.2528906716. The cubic root of 126163505 is about 501.5465514253.

The spelling of 126163505 in words is "one hundred twenty-six million, one hundred sixty-three thousand, five hundred five".