102143552 has 84 divisors (see below), whose sum is σ = 242718336. Its totient is φ = 41775360.

The previous prime is 102143551. The next prime is 102143557. The reversal of 102143552 is 255341201.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102143551) 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, 236777 + ... + 237207.

It is an arithmetic number, because the mean of its divisors is an integer number (2889504).

Almost surely, 2^102143552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102143552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121359168).

102143552 is an abundant number, since it is smaller than the sum of its proper divisors (140574784).

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

102143552 is an equidigital number, since it uses as much as digits as its factorization.

102143552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 102143552 is about 10106.6093226166. The cubic root of 102143552 is about 467.4519603281.

Adding to 102143552 its reverse (255341201), we get a palindrome (357484753).

The spelling of 102143552 in words is "one hundred two million, one hundred forty-three thousand, five hundred fifty-two".