542040545641 has 4 divisors (see below), whose sum is σ = 619474909312. Its totient is φ = 464606181972.

The previous prime is 542040545623. The next prime is 542040545653. The reversal of 542040545641 is 146545040245.

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 542040545641 - 2¹¹ = 542040543593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 542040545594 and 542040545603.

It is not an unprimeable number, because it can be changed into a prime (542040545941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38717181825 + ... + 38717181838.

It is an arithmetic number, because the mean of its divisors is an integer number (154868727328).

Almost surely, 2^542040545641 is an apocalyptic number.

It is an amenable number.

542040545641 is a deficient number, since it is larger than the sum of its proper divisors (77434363671).

542040545641 is an equidigital number, since it uses as much as digits as its factorization.

542040545641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77434363670.

The product of its (nonzero) digits is 384000, while the sum is 40.

Adding to 542040545641 its reverse (146545040245), we get a palindrome (688585585886).

The spelling of 542040545641 in words is "five hundred forty-two billion, forty million, five hundred forty-five thousand, six hundred forty-one".