102143544 has 32 divisors (see below), whose sum is σ = 268800000. Its totient is φ = 32255712.

The previous prime is 102143527. The next prime is 102143551. The reversal of 102143544 is 445341201.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111544 + ... + 112455.

It is an arithmetic number, because the mean of its divisors is an integer number (8400000).

Almost surely, 2^102143544 is an apocalyptic number.

It is an amenable number.

102143544 is an abundant number, since it is smaller than the sum of its proper divisors (166656456).

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

102143544 is a wasteful number, since it uses less digits than its factorization.

102143544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224027 (or 224023 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 102143544 is about 10106.6089268359. The cubic root of 102143544 is about 467.4519481244.

Adding to 102143544 its reverse (445341201), we get a palindrome (547484745).

The spelling of 102143544 in words is "one hundred two million, one hundred forty-three thousand, five hundred forty-four".