1306126042 has 8 divisors (see below), whose sum is σ = 2109895956. Its totient is φ = 602827392.

The previous prime is 1306126033. The next prime is 1306126061. The reversal of 1306126042 is 2406216031.

It can be written as a sum of positive squares in 2 ways, for example, as 1203326721 + 102799321 = 34689^2 + 10139^2 .

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 = 1306125998 and 1306126016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25117783 + ... + 25117834.

Almost surely, 2^1306126042 is an apocalyptic number.

1306126042 is a deficient number, since it is larger than the sum of its proper divisors (803769914).

1306126042 is a wasteful number, since it uses less digits than its factorization.

1306126042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50235632.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1306126042 is about 36140.3658254866. The cubic root of 1306126042 is about 1093.1045353537.

The spelling of 1306126042 in words is "one billion, three hundred six million, one hundred twenty-six thousand, forty-two".