254142454543 has 2 divisors, whose sum is σ = 254142454544. Its totient is φ = 254142454542.

The previous prime is 254142454523. The next prime is 254142454583. The reversal of 254142454543 is 345454241452.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254142454543 is a prime.

It is a super-2 number, since 2×254142454543² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 254142454543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254142454523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127071227271 + 127071227272.

It is an arithmetic number, because the mean of its divisors is an integer number (127071227272).

Almost surely, 2^254142454543 is an apocalyptic number.

254142454543 is a deficient number, since it is larger than the sum of its proper divisors (1).

254142454543 is an equidigital number, since it uses as much as digits as its factorization.

254142454543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536000, while the sum is 43.

Adding to 254142454543 its reverse (345454241452), we get a palindrome (599596695995).

The spelling of 254142454543 in words is "two hundred fifty-four billion, one hundred forty-two million, four hundred fifty-four thousand, five hundred forty-three".