540121505004121 has 4 divisors (see below), whose sum is σ = 540210531135952. Its totient is φ = 540032478872292.

The previous prime is 540121505004091. The next prime is 540121505004173. The reversal of 540121505004121 is 121400505121045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540121505004121 - 2⁹ = 540121505003609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540121505404121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44513056815 + ... + 44513068948.

It is an arithmetic number, because the mean of its divisors is an integer number (135052632783988).

Almost surely, 2^{540121505004121} is an apocalyptic number.

It is an amenable number.

540121505004121 is a deficient number, since it is larger than the sum of its proper divisors (89026131831).

540121505004121 is an equidigital number, since it uses as much as digits as its factorization.

540121505004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89026131830.

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 540121505004121 in words is "five hundred forty trillion, one hundred twenty-one billion, five hundred five million, four thousand, one hundred twenty-one".