102042143 has 12 divisors (see below), whose sum is σ = 123885552. Its totient is φ = 82318080.

The previous prime is 102042137. The next prime is 102042151. The reversal of 102042143 is 341240201.

It is not a de Polignac number, because 102042143 - 2⁸ = 102041887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23198 + ... + 27243.

It is an arithmetic number, because the mean of its divisors is an integer number (10323796).

Almost surely, 2^102042143 is an apocalyptic number.

102042143 is a deficient number, since it is larger than the sum of its proper divisors (21843409).

102042143 is an equidigital number, since it uses as much as digits as its factorization.

102042143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50482 (or 50465 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102042143 is about 10101.5911122951. The cubic root of 102042143 is about 467.2972123249.

Adding to 102042143 its reverse (341240201), we get a palindrome (443282344).

The spelling of 102042143 in words is "one hundred two million, forty-two thousand, one hundred forty-three".