1242271284539 has 16 divisors (see below), whose sum is σ = 1276339109760. Its totient is φ = 1208448870720.

The previous prime is 1242271284511. The next prime is 1242271284547. The reversal of 1242271284539 is 9354821722421.

It is a cyclic number.

It is not a de Polignac number, because 1242271284539 - 2²⁴ = 1242254507323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242271284509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10402832 + ... + 10521570.

It is an arithmetic number, because the mean of its divisors is an integer number (79771194360).

Almost surely, 2^{1242271284539} is an apocalyptic number.

1242271284539 is a deficient number, since it is larger than the sum of its proper divisors (34067825221).

1242271284539 is a wasteful number, since it uses less digits than its factorization.

1242271284539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119770.

The product of its digits is 1935360, while the sum is 50.

The spelling of 1242271284539 in words is "one trillion, two hundred forty-two billion, two hundred seventy-one million, two hundred eighty-four thousand, five hundred thirty-nine".