126666023 has 16 divisors (see below), whose sum is σ = 140882976. Its totient is φ = 112919040.

The previous prime is 126666011. The next prime is 126666047. The reversal of 126666023 is 320666621.

It is a cyclic number.

It is not a de Polignac number, because 126666023 - 2⁸ = 126665767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126666223) 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, 186761 + ... + 187437.

It is an arithmetic number, because the mean of its divisors is an integer number (8805186).

Almost surely, 2^126666023 is an apocalyptic number.

126666023 is a deficient number, since it is larger than the sum of its proper divisors (14216953).

126666023 is a wasteful number, since it uses less digits than its factorization.

126666023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 126666023 is about 11254.6000817444. The cubic root of 126666023 is about 502.2115675158.

It can be divided in two parts, 12 and 6666023, that multiplied together give a triangular number (79992276 = T₁₂₆₄₈).

The spelling of 126666023 in words is "one hundred twenty-six million, six hundred sixty-six thousand, twenty-three".