102145679 has 8 divisors (see below), whose sum is σ = 103362000. Its totient is φ = 100936512.

The previous prime is 102145663. The next prime is 102145699. The reversal of 102145679 is 976541201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102145679 - 2⁴ = 102145663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102145699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30227 + ... + 33435.

It is an arithmetic number, because the mean of its divisors is an integer number (12920250).

Almost surely, 2^102145679 is an apocalyptic number.

102145679 is a deficient number, since it is larger than the sum of its proper divisors (1216321).

102145679 is a wasteful number, since it uses less digits than its factorization.

102145679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 102145679 is about 10106.7145502384. The cubic root of 102145679 is about 467.4552049886.

The spelling of 102145679 in words is "one hundred two million, one hundred forty-five thousand, six hundred seventy-nine".