126651123 has 12 divisors (see below), whose sum is σ = 183183208. Its totient is φ = 84322080.

The previous prime is 126651121. The next prime is 126651143. The reversal of 126651123 is 321156621.

126651123 is a `hidden beast` number, since 1 + 2 + 6 + 651 + 1 + 2 + 3 = 666.

It is not a de Polignac number, because 126651123 - 2¹ = 126651121 is a prime.

It is a super-2 number, since 2×126651123² = 32081013914322258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126651121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1858 + ... + 16023.

Almost surely, 2^126651123 is an apocalyptic number.

126651123 is a deficient number, since it is larger than the sum of its proper divisors (56532085).

126651123 is a wasteful number, since it uses less digits than its factorization.

126651123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18674 (or 18671 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 126651123 is about 11253.9381107237. The cubic root of 126651123 is about 502.1918746636.

It can be divided in two parts, 126 and 651123, that added together give a square (651249 = 807²).

The spelling of 126651123 in words is "one hundred twenty-six million, six hundred fifty-one thousand, one hundred twenty-three".