126664239 has 16 divisors (see below), whose sum is σ = 182112224. Its totient is φ = 77846400.

The previous prime is 126664169. The next prime is 126664267. The reversal of 126664239 is 932466621.

It is not a de Polignac number, because 126664239 - 2¹¹ = 126662191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126664197 and 126664206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126664039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38229 + ... + 41409.

It is an arithmetic number, because the mean of its divisors is an integer number (11382014).

Almost surely, 2^126664239 is an apocalyptic number.

126664239 is a deficient number, since it is larger than the sum of its proper divisors (55447985).

126664239 is a wasteful number, since it uses less digits than its factorization.

126664239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218.

The product of its digits is 93312, while the sum is 39.

The square root of 126664239 is about 11254.5208249841. The cubic root of 126664239 is about 502.2092097416.

The spelling of 126664239 in words is "one hundred twenty-six million, six hundred sixty-four thousand, two hundred thirty-nine".