102001256 has 32 divisors (see below), whose sum is σ = 222704640. Its totient is φ = 42888768.

The previous prime is 102001247. The next prime is 102001259. The reversal of 102001256 is 652100201.

It is not an unprimeable number, because it can be changed into a prime (102001259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14216 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (6959520).

Almost surely, 2^102001256 is an apocalyptic number.

It is an amenable number.

102001256 is an abundant number, since it is smaller than the sum of its proper divisors (120703384).

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

102001256 is a wasteful number, since it uses less digits than its factorization.

102001256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34433 (or 34429 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 102001256 is about 10099.5671194364. The cubic root of 102001256 is about 467.2347906201.

Adding to 102001256 its reverse (652100201), we get a palindrome (754101457).

The spelling of 102001256 in words is "one hundred two million, one thousand, two hundred fifty-six".