1236863092842 has 192 divisors, whose sum is σ = 3093523130880. Its totient is φ = 353996707968.

The previous prime is 1236863092837. The next prime is 1236863092849. The reversal of 1236863092842 is 2482903686321.

1236863092842 is a `hidden beast` number, since 1 + 236 + 86 + 309 + 28 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1236863092849) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 60139653 + ... + 60160215.

It is an arithmetic number, because the mean of its divisors is an integer number (16112099640).

Almost surely, 2^{1236863092842} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1236863092842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1546761565440).

1236863092842 is an abundant number, since it is smaller than the sum of its proper divisors (1856660038038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1236863092842 is a wasteful number, since it uses less digits than its factorization.

1236863092842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20849 (or 20846 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 1236863092842 in words is "one trillion, two hundred thirty-six billion, eight hundred sixty-three million, ninety-two thousand, eight hundred forty-two".