154534030121 has 2 divisors, whose sum is σ = 154534030122. Its totient is φ = 154534030120.

The previous prime is 154534030117. The next prime is 154534030151. The reversal of 154534030121 is 121030435451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139371555625 + 15162474496 = 373325^2 + 123136^2 .

It is an emirp because it is prime and its reverse (121030435451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154534030121 - 2² = 154534030117 is a prime.

It is not a weakly prime, because it can be changed into another prime (154534030151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77267015060 + 77267015061.

It is an arithmetic number, because the mean of its divisors is an integer number (77267015061).

Almost surely, 2^154534030121 is an apocalyptic number.

It is an amenable number.

154534030121 is a deficient number, since it is larger than the sum of its proper divisors (1).

154534030121 is an equidigital number, since it uses as much as digits as its factorization.

154534030121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 154534030121 its reverse (121030435451), we get a palindrome (275564465572).

The spelling of 154534030121 in words is "one hundred fifty-four billion, five hundred thirty-four million, thirty thousand, one hundred twenty-one".