542143541 has 2 divisors, whose sum is σ = 542143542. Its totient is φ = 542143540.

The previous prime is 542143523. The next prime is 542143577. The reversal of 542143541 is 145341245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 394618225 + 147525316 = 19865^2 + 12146^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542143541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542143501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271071770 + 271071771.

It is an arithmetic number, because the mean of its divisors is an integer number (271071771).

Almost surely, 2^542143541 is an apocalyptic number.

It is an amenable number.

542143541 is a deficient number, since it is larger than the sum of its proper divisors (1).

542143541 is an equidigital number, since it uses as much as digits as its factorization.

542143541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The square root of 542143541 is about 23283.9760565072. The cubic root of 542143541 is about 815.4013560056.

Adding to 542143541 its reverse (145341245), we get a palindrome (687484786).

The spelling of 542143541 in words is "five hundred forty-two million, one hundred forty-three thousand, five hundred forty-one".