102143432 has 8 divisors (see below), whose sum is σ = 191518950. Its totient is φ = 51071712.

The previous prime is 102143413. The next prime is 102143453. The reversal of 102143432 is 234341201.

It can be written as a sum of positive squares in only one way, i.e., 52215076 + 49928356 = 7226^2 + 7066^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6383957 + ... + 6383972.

Almost surely, 2^102143432 is an apocalyptic number.

It is an amenable number.

102143432 is a deficient number, since it is larger than the sum of its proper divisors (89375518).

102143432 is a wasteful number, since it uses less digits than its factorization.

102143432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12767935 (or 12767931 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 102143432 is about 10106.6033859057. The cubic root of 102143432 is about 467.4517772712.

Adding to 102143432 its reverse (234341201), we get a palindrome (336484633).

The spelling of 102143432 in words is "one hundred two million, one hundred forty-three thousand, four hundred thirty-two".