126567442 has 4 divisors (see below), whose sum is σ = 189851166. Its totient is φ = 63283720.

The previous prime is 126567439. The next prime is 126567457. The reversal of 126567442 is 244765621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244765621 = 79 ⋅3098299.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 44102881 = 9081^2 + 6641^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31641859 + ... + 31641862.

Almost surely, 2^126567442 is an apocalyptic number.

126567442 is a deficient number, since it is larger than the sum of its proper divisors (63283724).

126567442 is an equidigital number, since it uses as much as digits as its factorization.

126567442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63283723.

The product of its digits is 80640, while the sum is 37.

The square root of 126567442 is about 11250.2196423003. The cubic root of 126567442 is about 502.0812474645.

The spelling of 126567442 in words is "one hundred twenty-six million, five hundred sixty-seven thousand, four hundred forty-two".