1242891495159 has 16 divisors (see below), whose sum is σ = 1692879505920. Its totient is φ = 810757897280.

The previous prime is 1242891495133. The next prime is 1242891495163. The reversal of 1242891495159 is 9515941982421.

It is a cyclic number.

It is not a de Polignac number, because 1242891495159 - 2⁵ = 1242891495127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242891496159) 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, 567777 + ... + 1675754.

It is an arithmetic number, because the mean of its divisors is an integer number (105804969120).

Almost surely, 2^{1242891495159} is an apocalyptic number.

1242891495159 is a deficient number, since it is larger than the sum of its proper divisors (449988010761).

1242891495159 is a wasteful number, since it uses less digits than its factorization.

1242891495159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247510.

The product of its digits is 9331200, while the sum is 60.

The spelling of 1242891495159 in words is "one trillion, two hundred forty-two billion, eight hundred ninety-one million, four hundred ninety-five thousand, one hundred fifty-nine".