102138675 has 12 divisors (see below), whose sum is σ = 168869400. Its totient is φ = 54473920.

The previous prime is 102138649. The next prime is 102138691. The reversal of 102138675 is 576831201.

It is not a de Polignac number, because 102138675 - 2⁵ = 102138643 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680850 + ... + 680999.

It is an arithmetic number, because the mean of its divisors is an integer number (14072450).

Almost surely, 2^102138675 is an apocalyptic number.

102138675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102138675 is a deficient number, since it is larger than the sum of its proper divisors (66730725).

102138675 is a wasteful number, since it uses less digits than its factorization.

102138675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361862 (or 1361857 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 102138675 is about 10106.3680419822. The cubic root of 102138675 is about 467.4445204736. Note that the first 3 decimals are identical.

Adding to 102138675 its reverse (576831201), we get a palindrome (678969876).

The spelling of 102138675 in words is "one hundred two million, one hundred thirty-eight thousand, six hundred seventy-five".