126425666 has 8 divisors (see below), whose sum is σ = 189875340. Its totient is φ = 63133888.

The previous prime is 126425659. The next prime is 126425669. The reversal of 126425666 is 666524621.

It can be written as a sum of positive squares in 2 ways, for example, as 112890625 + 13535041 = 10625^2 + 3679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×126425666³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (126425669) by changing a digit.

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, 37451 + ... + 40686.

Almost surely, 2^126425666 is an apocalyptic number.

126425666 is a deficient number, since it is larger than the sum of its proper divisors (63449674).

126425666 is an equidigital number, since it uses as much as digits as its factorization.

126425666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78948.

The product of its digits is 103680, while the sum is 38.

The square root of 126425666 is about 11243.9168442318. The cubic root of 126425666 is about 501.8937066951.

The spelling of 126425666 in words is "one hundred twenty-six million, four hundred twenty-five thousand, six hundred sixty-six".