542135445641 has 4 divisors (see below), whose sum is σ = 542244950784. Its totient is φ = 542025940500.

The previous prime is 542135445583. The next prime is 542135445689. The reversal of 542135445641 is 146544531245.

It is a happy number.

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 542135445641 - 2³⁸ = 267257538697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 542135445592 and 542135445601.

It is not an unprimeable number, because it can be changed into a prime (542195445641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54745145 + ... + 54755046.

It is an arithmetic number, because the mean of its divisors is an integer number (135561237696).

Almost surely, 2^542135445641 is an apocalyptic number.

It is an amenable number.

542135445641 is a deficient number, since it is larger than the sum of its proper divisors (109505143).

542135445641 is a wasteful number, since it uses less digits than its factorization.

542135445641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109505142.

The product of its digits is 1152000, while the sum is 44.

Adding to 542135445641 its reverse (146544531245), we get a palindrome (688679976886).

The spelling of 542135445641 in words is "five hundred forty-two billion, one hundred thirty-five million, four hundred forty-five thousand, six hundred forty-one".