126443642 has 8 divisors (see below), whose sum is σ = 204255156. Its totient is φ = 58358592.

The previous prime is 126443633. The next prime is 126443657. The reversal of 126443642 is 246344621.

It can be written as a sum of positive squares in 2 ways, for example, as 109641841 + 16801801 = 10471^2 + 4099^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 126443599 and 126443608.

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 in 3 ways as a sum of consecutive naturals, for example, 2431583 + ... + 2431634.

Almost surely, 2^126443642 is an apocalyptic number.

126443642 is a deficient number, since it is larger than the sum of its proper divisors (77811514).

126443642 is a wasteful number, since it uses less digits than its factorization.

126443642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4863232.

The product of its digits is 27648, while the sum is 32.

The square root of 126443642 is about 11244.7161813894. The cubic root of 126443642 is about 501.9174930406.

The spelling of 126443642 in words is "one hundred twenty-six million, four hundred forty-three thousand, six hundred forty-two".