1242891495160 has 64 divisors (see below), whose sum is σ = 3227035968000. Its totient is φ = 421996991616.

The previous prime is 1242891495133. The next prime is 1242891495163. The reversal of 1242891495160 is 615941982421.

It is a junction number, because it is equal to n+sod(n) for n = 1242891495098 and 1242891495107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242891495163) 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, 21519210 + ... + 21576889.

It is an arithmetic number, because the mean of its divisors is an integer number (50422437000).

Almost surely, 2^{1242891495160} is an apocalyptic number.

1242891495160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242891495160 is an abundant number, since it is smaller than the sum of its proper divisors (1984144472840).

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

1242891495160 is a wasteful number, since it uses less digits than its factorization.

1242891495160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43096220 (or 43096216 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 1242891495160 in words is "one trillion, two hundred forty-two billion, eight hundred ninety-one million, four hundred ninety-five thousand, one hundred sixty".