102543620 has 12 divisors (see below), whose sum is σ = 215341644. Its totient is φ = 41017440.

The previous prime is 102543601. The next prime is 102543641. The reversal of 102543620 is 26345201.

It can be written as a sum of positive squares in 2 ways, for example, as 37773316 + 64770304 = 6146^2 + 8048^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563571 + ... + 2563610.

It is an arithmetic number, because the mean of its divisors is an integer number (17945137).

Almost surely, 2^102543620 is an apocalyptic number.

102543620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102543620 is an abundant number, since it is smaller than the sum of its proper divisors (112798024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102543620 is a wasteful number, since it uses less digits than its factorization.

102543620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127190 (or 5127188 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 102543620 is about 10126.3823747674. The cubic root of 102543620 is about 468.0614585565.

Adding to 102543620 its reverse (26345201), we get a palindrome (128888821).

The spelling of 102543620 in words is "one hundred two million, five hundred forty-three thousand, six hundred twenty".