1286061242 has 8 divisors (see below), whose sum is σ = 1930388436. Its totient is φ = 642598432.

The previous prime is 1286061239. The next prime is 1286061251. The reversal of 1286061242 is 2421606821.

It can be written as a sum of positive squares in 2 ways, for example, as 906551881 + 379509361 = 30109^2 + 19481^2 .

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 = 1286061199 and 1286061208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212363 + ... + 218334.

Almost surely, 2^1286061242 is an apocalyptic number.

1286061242 is a deficient number, since it is larger than the sum of its proper divisors (644327194).

1286061242 is a wasteful number, since it uses less digits than its factorization.

1286061242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432192.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1286061242 is about 35861.6960279349. The cubic root of 1286061242 is about 1087.4781758425.

The spelling of 1286061242 in words is "one billion, two hundred eighty-six million, sixty-one thousand, two hundred forty-two".