102356 has 6 divisors (see below), whose sum is σ = 179130. Its totient is φ = 51176.

The previous prime is 102337. The next prime is 102359. The reversal of 102356 is 653201.

It can be written as a sum of positive squares in only one way, i.e., 99856 + 2500 = 316^2 + 50^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102359) by changing a digit.

102356 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12791 + ... + 12798.

It is an arithmetic number, because the mean of its divisors is an integer number (29855).

2¹⁰²³⁵⁶ is an apocalyptic number.

It is an amenable number.

102356 is a deficient number, since it is larger than the sum of its proper divisors (76774).

102356 is a wasteful number, since it uses less digits than its factorization.

102356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25593 (or 25591 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102356 is about 319.9312426132. The cubic root of 102356 is about 46.7775819774. Note that the first 3 decimals are identical.

Adding to 102356 its reverse (653201), we get a palindrome (755557).

The spelling of 102356 in words is "one hundred two thousand, three hundred fifty-six".