102542535 has 24 divisors (see below), whose sum is σ = 178161984. Its totient is φ = 54559680.

The previous prime is 102542519. The next prime is 102542537. The reversal of 102542535 is 535245201.

It is a happy number.

It is not a de Polignac number, because 102542535 - 2⁴ = 102542519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102542499 and 102542508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102542537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18274 + ... + 23216.

It is an arithmetic number, because the mean of its divisors is an integer number (7423416).

Almost surely, 2^102542535 is an apocalyptic number.

102542535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102542535 is a deficient number, since it is larger than the sum of its proper divisors (75619449).

102542535 is a wasteful number, since it uses less digits than its factorization.

102542535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415 (or 5412 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 102542535 is about 10126.3288016931. The cubic root of 102542535 is about 468.0598077193.

Adding to 102542535 its reverse (535245201), we get a palindrome (637787736).

The spelling of 102542535 in words is "one hundred two million, five hundred forty-two thousand, five hundred thirty-five".