4542247142891 has 2 divisors, whose sum is σ = 4542247142892. Its totient is φ = 4542247142890.

The previous prime is 4542247142821. The next prime is 4542247142897. The reversal of 4542247142891 is 1982417422454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4542247142891 - 2¹⁰ = 4542247141867 is a prime.

It is not a weakly prime, because it can be changed into another prime (4542247142897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271123571445 + 2271123571446.

It is an arithmetic number, because the mean of its divisors is an integer number (2271123571446).

Almost surely, 2^{4542247142891} is an apocalyptic number.

4542247142891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4542247142891 is an equidigital number, since it uses as much as digits as its factorization.

4542247142891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 53.

The spelling of 4542247142891 in words is "four trillion, five hundred forty-two billion, two hundred forty-seven million, one hundred forty-two thousand, eight hundred ninety-one".