102541543 has 4 divisors (see below), whose sum is σ = 110429368. Its totient is φ = 94653720.

The previous prime is 102541531. The next prime is 102541553. The reversal of 102541543 is 345145201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 345145201 = 139 ⋅2483059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102541543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102541553) 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, 3943893 + ... + 3943918.

It is an arithmetic number, because the mean of its divisors is an integer number (27607342).

Almost surely, 2^102541543 is an apocalyptic number.

102541543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102541543 is a deficient number, since it is larger than the sum of its proper divisors (7887825).

102541543 is an equidigital number, since it uses as much as digits as its factorization.

102541543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887824.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 102541543 is about 10126.2798203486. The cubic root of 102541543 is about 468.0582983722.

Adding to 102541543 its reverse (345145201), we get a palindrome (447686744).

The spelling of 102541543 in words is "one hundred two million, five hundred forty-one thousand, five hundred forty-three".