102542243 has 8 divisors (see below), whose sum is σ = 103454208. Its totient is φ = 101634624.

The previous prime is 102542201. The next prime is 102542269. The reversal of 102542243 is 342245201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102542243 - 2⁶ = 102542179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102542543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60830 + ... + 62492.

It is an arithmetic number, because the mean of its divisors is an integer number (12931776).

Almost surely, 2^102542243 is an apocalyptic number.

102542243 is a deficient number, since it is larger than the sum of its proper divisors (911965).

102542243 is a wasteful number, since it uses less digits than its factorization.

102542243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 102542243 is about 10126.3143838220. The cubic root of 102542243 is about 468.0593634367.

Adding to 102542243 its reverse (342245201), we get a palindrome (444787444).

The spelling of 102542243 in words is "one hundred two million, five hundred forty-two thousand, two hundred forty-three".