102020535 has 24 divisors (see below), whose sum is σ = 182542464. Its totient is φ = 52655040.

The previous prime is 102020531. The next prime is 102020537. The reversal of 102020535 is 535020201.

It is a happy number.

It is not a de Polignac number, because 102020535 - 2² = 102020531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020531) 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, 35172 + ... + 37961.

It is an arithmetic number, because the mean of its divisors is an integer number (7605936).

Almost surely, 2^102020535 is an apocalyptic number.

102020535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102020535 is a deficient number, since it is larger than the sum of its proper divisors (80521929).

102020535 is a wasteful number, since it uses less digits than its factorization.

102020535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73175 (or 73172 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 102020535 is about 10100.5215211889. The cubic root of 102020535 is about 467.2642257219.

Adding to 102020535 its reverse (535020201), we get a palindrome (637040736).

The spelling of 102020535 in words is "one hundred two million, twenty thousand, five hundred thirty-five".