103921329 has 8 divisors (see below), whose sum is σ = 138681952. Its totient is φ = 69220800.

The previous prime is 103921327. The next prime is 103921373. The reversal of 103921329 is 923129301.

It is a happy number.

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

It is not a de Polignac number, because 103921329 - 2¹ = 103921327 is a prime.

It is a super-2 number, since 2×103921329² = 21599285242252482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 103921296 and 103921305.

It is not an unprimeable number, because it can be changed into a prime (103921327) 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, 10819 + ... + 18024.

It is an arithmetic number, because the mean of its divisors is an integer number (17335244).

Almost surely, 2^103921329 is an apocalyptic number.

It is an amenable number.

103921329 is a deficient number, since it is larger than the sum of its proper divisors (34760623).

103921329 is a wasteful number, since it uses less digits than its factorization.

103921329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30047.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 103921329 is about 10194.1811343531. The cubic root of 103921329 is about 470.1483295223.

The spelling of 103921329 in words is "one hundred three million, nine hundred twenty-one thousand, three hundred twenty-nine".