126505156 has 12 divisors (see below), whose sum is σ = 221717692. Its totient is φ = 63157248.

The previous prime is 126505147. The next prime is 126505187. The reversal of 126505156 is 651505621.

It can be written as a sum of positive squares in 2 ways, for example, as 19713600 + 106791556 = 4440^2 + 10334^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20805 + ... + 26188.

Almost surely, 2^126505156 is an apocalyptic number.

It is an amenable number.

126505156 is a deficient number, since it is larger than the sum of its proper divisors (95212536).

126505156 is a wasteful number, since it uses less digits than its factorization.

126505156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47670 (or 47668 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 126505156 is about 11247.4510890246. The cubic root of 126505156 is about 501.9988730312.

The spelling of 126505156 in words is "one hundred twenty-six million, five hundred five thousand, one hundred fifty-six".