1282421247156 has 144 divisors (see below), whose sum is σ = 3842568597504. Its totient is φ = 366350540256.

The previous prime is 1282421247131. The next prime is 1282421247161. The reversal of 1282421247156 is 6517421242821.

1282421247156 is a `hidden beast` number, since 1 + 2 + 82 + 42 + 12 + 471 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70364661 + ... + 70382883.

Almost surely, 2^{1282421247156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1282421247156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921284298752).

1282421247156 is an abundant number, since it is smaller than the sum of its proper divisors (2560147350348).

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

1282421247156 is a wasteful number, since it uses less digits than its factorization.

1282421247156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28592 (or 28578 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

Adding to 1282421247156 its reverse (6517421242821), we get a palindrome (7799842489977).

The spelling of 1282421247156 in words is "one trillion, two hundred eighty-two billion, four hundred twenty-one million, two hundred forty-seven thousand, one hundred fifty-six".