4542121606049 has 2 divisors, whose sum is σ = 4542121606050. Its totient is φ = 4542121606048.

The previous prime is 4542121606019. The next prime is 4542121606097. The reversal of 4542121606049 is 9406061212454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4193587230625 + 348534375424 = 2047825^2 + 590368^2 .

It is a cyclic number.

It is not a de Polignac number, because 4542121606049 - 2¹⁶ = 4542121540513 is a prime.

It is not a weakly prime, because it can be changed into another prime (4542121606019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271060803024 + 2271060803025.

It is an arithmetic number, because the mean of its divisors is an integer number (2271060803025).

Almost surely, 2^{4542121606049} is an apocalyptic number.

It is an amenable number.

4542121606049 is a deficient number, since it is larger than the sum of its proper divisors (1).

4542121606049 is an equidigital number, since it uses as much as digits as its factorization.

4542121606049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 4542121606049 in words is "four trillion, five hundred forty-two billion, one hundred twenty-one million, six hundred six thousand, forty-nine".