102549143 has 2 divisors, whose sum is σ = 102549144. Its totient is φ = 102549142.

The previous prime is 102549131. The next prime is 102549173. The reversal of 102549143 is 341945201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102549143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102549173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51274571 + 51274572.

It is an arithmetic number, because the mean of its divisors is an integer number (51274572).

Almost surely, 2^102549143 is an apocalyptic number.

102549143 is a deficient number, since it is larger than the sum of its proper divisors (1).

102549143 is an equidigital number, since it uses as much as digits as its factorization.

102549143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 102549143 is about 10126.6550746039. The cubic root of 102549143 is about 468.0698616700.

The spelling of 102549143 in words is "one hundred two million, five hundred forty-nine thousand, one hundred forty-three".