102543156 has 18 divisors (see below), whose sum is σ = 259206402. Its totient is φ = 34181040.

The previous prime is 102543149. The next prime is 102543157. The reversal of 102543156 is 651345201.

102543156 is a `hidden beast` number, since 102 + 543 + 15 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63680400 + 38862756 = 7980^2 + 6234^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102543157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1424175 + ... + 1424246.

Almost surely, 2^102543156 is an apocalyptic number.

It is an amenable number.

102543156 is an abundant number, since it is smaller than the sum of its proper divisors (156663246).

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

102543156 is a wasteful number, since it uses less digits than its factorization.

102543156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848431 (or 2848426 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 102543156 is about 10126.3594642892. The cubic root of 102543156 is about 468.0607525778.

Adding to 102543156 its reverse (651345201), we get a palindrome (753888357).

The spelling of 102543156 in words is "one hundred two million, five hundred forty-three thousand, one hundred fifty-six".