126205042 has 16 divisors (see below), whose sum is σ = 207356760. Its totient is φ = 57342208.

The previous prime is 126205033. The next prime is 126205063. The reversal of 126205042 is 240502621.

It can be written as a sum of positive squares in 4 ways, for example, as 125014761 + 1190281 = 11181^2 + 1091^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63013 + ... + 64984.

Almost surely, 2^126205042 is an apocalyptic number.

126205042 is a deficient number, since it is larger than the sum of its proper divisors (81151718).

126205042 is a wasteful number, since it uses less digits than its factorization.

126205042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128045.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 126205042 is about 11234.1017442428. The cubic root of 126205042 is about 501.6015870271.

Adding to 126205042 its reverse (240502621), we get a palindrome (366707663).

The spelling of 126205042 in words is "one hundred twenty-six million, two hundred five thousand, forty-two".