102139659 has 12 divisors (see below), whose sum is σ = 147696016. Its totient is φ = 68018832.

The previous prime is 102139633. The next prime is 102139729. The reversal of 102139659 is 956931201.

It is not a de Polignac number, because 102139659 - 2¹¹ = 102137611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102139759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3282 + ... + 14664.

Almost surely, 2^102139659 is an apocalyptic number.

102139659 is a deficient number, since it is larger than the sum of its proper divisors (45556357).

102139659 is a wasteful number, since it uses less digits than its factorization.

102139659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12386 (or 12383 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 102139659 is about 10106.4167240422. The cubic root of 102139659 is about 467.4460215829.

The spelling of 102139659 in words is "one hundred two million, one hundred thirty-nine thousand, six hundred fifty-nine".