103856129 has 8 divisors (see below), whose sum is σ = 112597800. Its totient is φ = 95222016.

The previous prime is 103856119. The next prime is 103856141. The reversal of 103856129 is 921658301.

It can be written as a sum of positive squares in 4 ways, for example, as 9241600 + 94614529 = 3040^2 + 9727^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103856129 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103856119) 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, 24872 + ... + 28745.

It is an arithmetic number, because the mean of its divisors is an integer number (14074725).

Almost surely, 2^103856129 is an apocalyptic number.

It is an amenable number.

103856129 is a deficient number, since it is larger than the sum of its proper divisors (8741671).

103856129 is a wasteful number, since it uses less digits than its factorization.

103856129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53779.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 103856129 is about 10190.9827298450. The cubic root of 103856129 is about 470.0499856298.

The spelling of 103856129 in words is "one hundred three million, eight hundred fifty-six thousand, one hundred twenty-nine".