126166442 has 4 divisors (see below), whose sum is σ = 189249666. Its totient is φ = 63083220.

The previous prime is 126166433. The next prime is 126166511. The reversal of 126166442 is 244661621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244661621 = 53 ⋅4616257.

It can be written as a sum of positive squares in only one way, i.e., 122965921 + 3200521 = 11089^2 + 1789^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126166399 and 126166408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31541609 + ... + 31541612.

Almost surely, 2^126166442 is an apocalyptic number.

126166442 is a deficient number, since it is larger than the sum of its proper divisors (63083224).

126166442 is an equidigital number, since it uses as much as digits as its factorization.

126166442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63083223.

The product of its digits is 13824, while the sum is 32.

The square root of 126166442 is about 11232.3836294884. The cubic root of 126166442 is about 501.5504432818.

The spelling of 126166442 in words is "one hundred twenty-six million, one hundred sixty-six thousand, four hundred forty-two".