102142625 has 32 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 74827200.

The previous prime is 102142619. The next prime is 102142627. The reversal of 102142625 is 526241201.

It is a happy number.

It is not a de Polignac number, because 102142625 - 2¹⁶ = 102077089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102142625.

It is not an unprimeable number, because it can be changed into a prime (102142627) 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 31 ways as a sum of consecutive naturals, for example, 388244 + ... + 388506.

It is an arithmetic number, because the mean of its divisors is an integer number (4324320).

Almost surely, 2^102142625 is an apocalyptic number.

It is an amenable number.

102142625 is a deficient number, since it is larger than the sum of its proper divisors (36235615).

102142625 is a wasteful number, since it uses less digits than its factorization.

102142625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 102142625 is about 10106.5634614344. The cubic root of 102142625 is about 467.4505462096.

Adding to 102142625 its reverse (526241201), we get a palindrome (628383826).

The spelling of 102142625 in words is "one hundred two million, one hundred forty-two thousand, six hundred twenty-five".